VIDAMED INC
424B4, 1998-05-22
SURGICAL & MEDICAL INSTRUMENTS & APPARATUS
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Filed Pursuant to Rule 424(b)(4)
Registration No. 333-45895

Prospectus supplement dated May 20, 1998
to Prospectus dated April 16, 1998


                                 VIDAMED, INC.

                        4,342,504 Shares of Common Stock
             Warrants to purchase 1,085,626 shares of Common Stock

     VidaMed,  Inc.  ("VidaMed" or the "Company") is offering  hereby  4,342,504
shares of its Common Stock, $.001 par value (the "Common Stock") and warrants to
purchase  1,085,626  shares of its Common Stock. The offering price per share of
Common Stock is $4.00 per share. The exercise price of the Warrants is $5.00 per
share.

Sale of Securities

     On May 20, 1998, the Company  issued a total of 4,342,504  shares of Common
Stock to a group of  investors  at a price of $4.00  per  share in a  negotiated
transaction.  In connection  with this  transaction,  the Company  issued to the
purchasers  of such  shares  of Common  Stock  Shelf  Warrants  to  purchase  an
aggregate of 1,085,626  shares of Common Stock at an exercise price of $5.00 per
share.

     The Company has not entered into any underwriting arrangements with respect
to the above-referenced  sales of shares of Common Stock and Shelf Warrants. The
Company engaged placement agents in connection with the  above-referenced  sales
of shares of Common Stock and Warrants and has agreed to issue to such placement
agents,  as compensation for their placement  agency  services,  an aggregate of
122,362 shares of Common Stock and Shelf  Warrants to purchase  30,591 shares of
Common Stock.  Such shares of Common Stock and Shelf Warrants are included among
the shares of Common Stock and Shelf Warrants offered hereby.

     The Common Stock is quoted on the Nasdaq  National  Market under the symbol
VIDA. The Shelf Warrants are not quoted or listed on any securities  exchange or
market,  and the  Company  does not intend to apply for any listing of the Shelf
Warrants on any  securities  exchange or market.  Accordingly,  no public market
exists for the Shelf  Warrants and it is not expected  that any such market will
exist in the future.


<PAGE>


PROSPECTUS

                                  VIDAMED, INC.

                        6,000,000 Shares of Common Stock
                  2,629,413 Warrants to Purchase Common Stock
                        2,000,000 Shares of Common Stock
                       Issuable Upon Exercise of Warrants

         This  Prospectus  relates to (i)  6,000,000  shares (the  "Shares")  of
common stock,  $.001 par value per share (the "Common  Stock"),  (ii)  2,000,000
Warrants to purchase Common Stock (the "Shelf Warrants"), (iii) 2,000,000 shares
of Common Stock issuable upon exercise of the Shelf Warrants (the "Shelf Warrant
Shares")  and (iv)  629,413  Warrants  to  purchase  Common  Stock (the  "Resale
Warrants") of VidaMed, Inc. (the "Company" or "VidaMed").  The Shares, the Shelf
Warrants and the Shelf Warrant Shares collectively are referred to herein as the
"Shelf Securities."

         The Resale  Warrants  may be offered  by  certain  stockholders  of the
Company  (the  "Selling  Warrant  Holders")  from  time  to  time  in  privately
negotiated transactions,  through the writing of options on the Resale Warrants,
or through a  combination  of such methods of sale,  at fixed prices that may be
changed,  at market prices prevailing at the time of sale, at prices relating to
such  prevailing  market prices or at  negotiated  prices.  The Selling  Warrant
Holders  may effect  such  transactions  by selling  the Resale  Warrants  to or
through broker-dealers,  and such broker-dealers may receive compensation in the
form of discounts,  concessions or commissions  from the Selling Warrant Holders
and/or the purchasers of the Resale  Warrants for whom such  broker-dealers  may
act  as  agents  or to  whom  they  may  sell  as  principals,  or  both  (which
compensation  as to a particular  broker-dealer  might be in excess of customary
commissions). See "Selling Warrant Holders" and "Plan of Distribution."

         None of the  proceeds  from  the  sale of the  Resale  Warrants  by the
Selling Warrant Holders will be received by the Company.  The Company has agreed
to bear all expenses  (other than selling  commissions  and fees and expenses of
counsel and other advisers to the Selling  Warrant  Holders) in connection  with
the  registration  and sale of the Resale  Warrants being offered by the Selling
Warrant Holders. The Company has agreed to indemnify the Selling Warrant Holders
against certain liabilities,  including  liabilities under the Securities Act of
1933, as amended (the "Securities Act").

         All  the  Resale  Warrants  were  "restricted   securities"  under  the
Securities Act prior to their registration hereunder. The Company sold 2,517,652
shares of Common Stock and 629,413  Warrants to the Selling  Warrant  Holders in
private  transactions in September  1997.  Such 629,413  Warrants are the Resale
Warrants registered hereunder.  This Prospectus has been prepared so that future
sales of Resale  Warrants by the Selling  Warrant Holders will not be restricted
under the  Securities  Act. In connection  with any sales,  the Selling  Warrant
Holders  and  any  brokers  participating  in such  sales  may be  deemed  to be
"underwriters"  within the meaning of the Securities  Act. See "Selling  Warrant
Holders."

         The  Company  may from  time to time  offer  the  Shelf  Securities  in
amounts,  at prices and on terms to be determined  at the time of offering.  The
Shelf  Securities may be offered  separately or together,  in separate series in
amounts,  at  prices  and on  terms  to be set  forth  in  supplements  to  this
Prospectus (each a "Prospectus Supplement").

         The  specific  terms of the Shelf  Securities  in respect of which this
Prospectus is being  delivered  will be set forth in the  applicable  Prospectus
Supplement and will include,  where  applicable:  (i) in the case of the Shares,
any public offering price and (ii) in the case of the Shelf Warrants,  the terms
of issuance and exercise and any public offering price.

         The applicable  Prospectus  Supplement  will also contain  information,
where applicable,  about certain United States federal income tax considerations
relating to, and any listing on a securities  exchange of, the Shelf  Securities
covered by such Prospectus Supplement.



<PAGE>


         The Shelf  Securities  offered  by this  Prospectus  may be sold by the
Company from time to time through agents or  underwriters,  or to dealers acting
as  principals,  or directly to purchasers in  negotiated  transactions,  or any
combination  of these methods of sale.  Sales may be made at  prevailing  market
prices or at fixed  prices  determined  at the time of each  sale.  See "Plan of
Distribution"  regarding  Prospectus  Supplements  to be  appended  to  disclose
compensation by the Company to agents or underwriters  that may be designated to
participate in the offering of the Shelf  Securities.  The Company may indemnify
any participating  agent or underwriter against certain  liabilities,  including
liabilities  under the Securities  Act of 1933.  Expenses of the offering of the
Shelf  Securities,  estimated at $80,000  (excluding  compensation  to agents or
underwriters), will be paid by the Company.

         The Company's  Common Shares are traded on the Nasdaq  National  Market
System under the symbol "VIDA."

                          ----------------------------

         THESE SECURITIES INVOLVE A HIGH DEGREE OF RISK.  SEE "RISK FACTORS."

    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
      SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
          PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
              REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.


                  The date of this Prospectus is April 16, 1998


<PAGE>


                              AVAILABLE INFORMATION

         As used in this Prospectus,  unless the context otherwise requires, the
terms "VidaMed" and the "Company" mean VidaMed,  Inc. and its subsidiaries.  The
Company is subject to the informational  requirements of the Securities Exchange
Act of 1934, as amended (the  "Exchange  Act"),  and, in  accordance  therewith,
files reports,  proxy  statements and other  information with the Securities and
Exchange  Commission (the  "Commission").  Reports,  proxy  statements and other
information filed with the Commission pursuant to the informational requirements
of the  Exchange  Act  may be  inspected  and  copied  at the  public  reference
facilities  maintained by the Commission at Room 1024,  450 Fifth Street,  N.W.,
Washington, D.C. 20549, and at the following regional offices of the Commission:
New York Regional Office,  7 World Trade Center,  Suite 1300, New York, New York
10048; and Chicago Regional  Office,  Citicorp Center,  500 West Madison Street,
Suite 1400,  Chicago,  Illinois 60661.  Copies of such materials may be obtained
from the Public Reference  Section of the Commission at 450 Fifth Street,  N.W.,
Washington,  D.C. 20549, at prescribed  rates. The Commission  maintains a World
Wide Web site that contains reports,  proxy and information statements and other
information  regarding registrants that file electronically with the Commission.
The address of the site is http://www.sec.gov.

         The  Company's  Common Stock is traded on the Nasdaq  National  Market.
Reports and other  information  concerning  the Company may be  inspected at the
National  Association  of  Securities  Dealers,   Inc.,  1735  K  Street,  N.W.,
Washington, D.C. 20006.

         This Prospectus  constitutes  part of a Registration  Statement on Form
S-3 (herein,  together with all amendments and exhibits thereto,  referred to as
the "Registration Statement") filed by the Company with the Commission under the
Securities Act of 1933, as amended (the "Securities  Act"),  with respect to the
securities  offered  hereby.  This  Prospectus  does  not  contain  all  of  the
information set forth in the Registration Statement,  certain parts of which are
omitted in accordance  with the rules and  regulations  of the  Commission.  For
further  information,  reference is hereby made to the  Registration  Statement,
copies  of which  may be  obtained  from the  Public  Reference  Section  of the
Commission, 450 Fifth Street, N.W., Washington,  D.C. 20549, upon payment of the
fees prescribed by the Commission. Statements contained in this Prospectus as to
the contents of any contract or any other document  filed,  or  incorporated  by
reference,  as an exhibit to the  Registration  Statement,  are qualified in all
respects by such reference.


                      INFORMATION INCORPORATED BY REFERENCE

         The  Company's  Registration  Statements  on Form  8-A  filed  with the
Commission on May 17, 1995 and January 31, 1997, the Company's  Annual Report on
Form 10-K for the fiscal year ended December 31, 1996,  the Company's  Quarterly
Reports on Form 10-Q for the quarters  ended March 31,  1997,  June 30, 1997 and
September  30,  1997 and the  Company's  Current  Report  on Form  8-K  filed on
September 24, 1997 heretofore filed by the Company with the Commission  pursuant
to the Exchange Act, are hereby incorporated by reference,  except as superseded
or modified herein.

         Each document filed subsequent to the date of this Prospectus  pursuant
to  Section  13(a),  13(c),  14 or 15(d) of the  Exchange  Act and  prior to the
termination of the offering of the Resale  Warrants and of the Shelf  Securities
shall be deemed to be  incorporated  by reference into this Prospectus and shall
be part hereof from the date of filing of such document.

         The Company will provide  without  charge to each person to whom a copy
of this  Prospectus is  delivered,  upon the written or oral request of any such
person, a copy of any document  described above (other than



<PAGE>


exhibits).  Requests for such copies should be directed to VidaMed,  Inc. at its
principal offices located at 46107 Landing Parkway,  Fremont,  California 94538,
telephone (510) 492-4902, attention Investor Relations.

         Any  statement  contained  in a  document  all or a portion of which is
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or superseded  for purposes of this  Prospectus to the extent that a
statement  contained  herein or in any other  subsequently  filed document which
also  is or is  deemed  to be  incorporated  by  reference  herein  modifies  or
supersedes such statement.  Any statement so modified or superseded shall not be
deemed to constitute a part of this  Prospectus  except as so modified,  and any
statement  so  superseded  shall  not be  deemed  to  constitute  part  of  this
Prospectus.

         VidaMed(R),  the VidaMed logo and TUNA(TM) are  trademarks  of VidaMed,
Inc.



<PAGE>


- --------------------------------------------------------------------------------
                                   THE COMPANY

         VidaMed, Inc. (the "Company" or "VidaMed") was founded in July 1992 and
reincorporated in the State of Delaware in June 1995. VidaMed designs, develops,
manufactures and markets technologically and clinically advanced, cost effective
systems for  urological  applications.  The  Company's  initial  focus is on the
treatment of benign prostatic  hyperplasia ("BPH"). The Company's first product,
the  patented  VidaMed  TUNA  System,  is  designed  to offer a cost  effective,
minimally invasive  alternative  therapy with compelling clinical advantages for
BPH treatment.  The Company commenced manufacturing production and product sales
in 1993. On October 8, 1996,  the Company  received  510(k)  clearance  from the
United  States  Food and Drug  Administration  ("FDA") to market the TUNA System
commercially  in the  United  States  for the  treatment  of BPH.  In the United
States,  the Company sells its products primarily through direct sales personnel
and a network of specialty  urology  product  dealers.  International  sales are
primarily to distributors who resell to physicians and hospitals.

         VidaMed has  designed and  developed  the TUNA System to be used in the
TUNA  Procedure  as the therapy of choice for BPH over  watchful  waiting,  drug
therapy  and  current  surgical  therapies.  The TUNA  Procedure  is designed to
restore and improve  urinary  flow while  resulting in fewer  complications  and
adverse effects, shorter recovery time and greater cost effectiveness than other
therapies for treating BPH. The Company believes that the cost of treatment with
the TUNA Procedure will be less than the cost of many other  interventional  BPH
therapies  because the  procedure is designed to be  performed on an  outpatient
basis and to result in fewer complications.

         The principal components of the TUNA System are (i) a single-use needle
ablation hand piece that delivers RF energy to the prostate, (ii) a low power RF
energy  generator and (iii) an optical  device that allows direct viewing during
the procedure.

         TUNA Hand  Piece.  The  single-use  TUNA hand piece  measures 22 French
(approximately  seven  millimeters) in diameter and contains  laterally deployed
needles  that extend at an angle of  approximately  90  degrees.  Each needle is
encased by a patented  retractable  shield  which  protects  the  urethra and is
adjusted by the  urologist to  selectively  control the area of prostate  tissue
ablated  during  the  procedure.  Controls  on the hand piece  handle  allow for
independent advancement and retraction of the needle and shields.  Thermocouples
located at the shield tip and at the hand piece tip record  temperatures  at the
lesion site and in the prostatic urethra.  The hand piece allows for irrigation,
aspiration  and bladder  drainage  during the  procedure  without  removing  the
handpiece from the bladder.  These features improve visualization of the area of
treatment and reduce  post-procedural  urethral irritation.  In addition,  these
capabilities  allow  the  physician  to more  closely  control  urethral  tissue
temperature during the procedure.

         TUNA RF Generator.  The TUNA radio frequency ("RF") energy generator is
designed  specifically  for use with the TUNA hand piece.  The RF generator  has
digital displays  indicating the temperature at each thermocouple,  the RF power
being delivered to each needle,  ablation time and electrical  impedance.  These
measurements are used by the physician to control tissue ablation. The generator
incorporates  both  automated  and manual  control  modes.  The generator has an
automatic shut-off  activated by both temperature and impedance  measurements to
ensure controlled tissue ablation.

         TUNA Optics. The TUNA optical device allows precise  positioning of the
hand piece  between the  verumontanum  and the bladder neck during the procedure
using direct  visualization.  The optical device is reusable after sterilization
and is equipped with a three-way  exchange adapter,  which allows the unit to be
used with endoscopic light sources manufactured by other companies.
- --------------------------------------------------------------------------------


<PAGE>
- --------------------------------------------------------------------------------
         The TUNA Procedure  desiccates  prostatic  tissue,  leading to improved
urinary flow, and can be performed in  approximately 30 to 45 minutes with local
anesthesia,  which may be  supplemented by intravenous  sedation.  The TUNA hand
piece is  inserted  into the  patient's  urethra,  and the two  shielded  needle
electrodes  are then advanced into one of the two lateral lobes of the prostate.
Controlled RF energy delivered by the needle  electrodes heats targeted portions
of the prostate lobe to temperatures of 90 to 100 degrees centigrade, creating a
localized  area  of  desiccated  tissue  measuring   approximately  one  to  two
centimeters  in  diameter,  while the shields  protect the urethra  from thermal
damage.  Once a  lesion  of  sufficient  size has been  created,  the  urologist
retracts  the  needles  and places the hand piece at the next site to be ablated
and repeats the process. Typically, two treatments in each lateral prostate lobe
are performed depending upon the size of the prostate.  If the patient is unable
to urinate due to temporary  swelling or irritation  of the urethra,  a catheter
will be inserted into the patient's  urethra.  This  catheter,  if inserted,  is
typically left in place for one to two days.

         The Company  believes that the design of the VidaMed TUNA System offers
significant advantages over other BPH therapies. Because the TUNA System shields
the urethra and delivers  controlled RF energy directly into the interior of the
prostate,  the procedure  protects the prostatic urethra and reduces the risk of
unintended thermal damage to surrounding  structures.  In other procedures where
this control does not exist,  the prostatic  urethra and other structures can be
damaged or destroyed,  causing significant patient discomfort and complications.
Clinical trials of the TUNA Procedure  indicate that the TUNA Procedure  results
in  fewer  of the  complications  associated  with  transurethral  resection  of
prostate  ("TURP")  surgery,  including  impotence,  retrograde  ejaculation and
incontinence.  The Company  believes that the cost of the TUNA  Procedure in the
United States,  including physician charges, will be significantly less than the
cost of TURP, which is the standard surgical procedure to treat BPH. The TUNA RF
generator is typically  currently  sold at  approximately  $35,000 in the United
States, which is less than the general surgical lasers required to perform laser
procedures and the ultrasound and microwave  devices required for other surgical
procedures.

         The Company  believes  the VidaMed  TUNA  Procedure  will also  provide
patients,  physicians and health care payors with a clinically and  economically
superior alternative to ongoing drug therapy, other minimally invasive surgeries
and watchful waiting. To date, the symptomatic relief experienced by patients in
the Company's  clinical trials  suggests that TUNA provides  greater relief than
drug  therapy or  watchful  waiting.  The  Company  believes  that if the relief
provided  by TUNA  proves  to be  sufficiently  durable,  TUNA  may  prove to be
economically  superior to the  noninvasive  approaches.  To date,  the Company's
available two to three-year  clinical follow-up data for TUNA Procedure patients
does not suggest the need for retreatment within this time frame. However, there
can be no assurance as to whether and how  frequently  TUNA  Procedure  patients
will require retreatment.

         In September 1997,  VidaMed announced a restructuring  program designed
to reduce  costs and improve  operating  efficiencies  by closing the  Company's
United Kingdom manufacturing  facility. The Company anticipates that following a
short  transition  period,  all future  manufacturing of the VidaMed TUNA System
hand pieces will occur in the United States.  In this regard,  the Company moved
into its new  headquarters  facility in Fremont,  California  in July 1997.  The
facility is approximately 35,000 square feet and provides the necessary capacity
to manufacture the VidaMed TUNA hand piece. The Company is currently  qualifying
the facility as an FDA, GMP and ISO9001 site.

                              RECENT DEVELOPMENTS

         On January 21, 1998, the Company reported its financial  results of the
fourth quarter and for the year ended  December 31, 1997. The Company's  revenue
for the fourth  quarter of 1997 was $2.0  million,  compared to $2.4 million for
the  fourth  quarter of 1996.  The loss for the fourth  quarter of 1997 was $3.1
million,  or $0.20 per share,  compared to a net loss of $3.1 million,  or $0.29
per share,  for the fourth  quarter of 1996.  The Company  reported  that in the
fourth quarter of 1997,  sales in the United States  increased 9% from the third
quarter  of 1997 and  sales in  Japan  remained  constant  at  almost  $500,000.

         Revenue for the year ended December 31, 1997 was $9.8 million, compared
to $3.8  million for the year ended  December  31,  1996.  The loss for 1997 was
$16.5 million,  or $1.29 per share on 12.8 million  average shares  outstanding,
compared  to a net loss of $13.5  million,  or $1.30 per  share on 10.4  million
average shares  outstanding  for 1996. The 1997 results  include a one-time $2.1
million  cost of goods charge  relating to the  consolidation  of  manufacturing
facilities to the Company's California headquarters,  which was completed in the
fourth quarter of 1997. There were approximately 15.2 million shares outstanding
at December 31, 1997.

         As of December 31, 1997,  VidaMed's cash and cash equivalents  stood at
$8.0 million. In January 1998, the Company arranged a $1.5 million 42-month term
loan  with  Silicon  Valley  Bank  to  finance  the  costs  incurred  in 1997 of
establishing the Company's  manufacturing  facility in California.  In addition,
the Company has established a $3 million working capital line of credit facility
with Silicon Valley Bank.
- --------------------------------------------------------------------------------
                                      -2-
<PAGE>
                                  RISK FACTORS

         An  investment  in the  Securities  being  offered  by this  Prospectus
involves a high  degree of risk.  The  following  factors,  in addition to those
discussed  elsewhere  in this  Prospectus,  should be  carefully  considered  in
evaluating the Company and its business  prospects before purchasing  Securities
offered by this Prospectus.

         Limited Operating History;  History of Losses and Expectation of Future
Losses;  Fluctuations in Operating Results. The Company has a limited history of
operations.  Since its  inception in July 1992,  the Company has been  primarily
engaged in research and development of the VidaMed TUNA System.  The Company has
experienced significant operating losses since inception and, as of December 31,
1997, had an accumulated deficit of $68.3 million.

         The development and commercialization by the Company of the TUNA System
and other new products,  if any, will require substantial  product  development,
clinical, regulatory,  marketing and other expenditures. The Company expects its
operating  losses  to  continue  for at  least  the  next 9 to 18  months  as it
continues  to expend  substantial  resources in  expanding  marketing  and sales
activities,  funding clinical trials in support of regulatory and  reimbursement
approvals and research and development.  There can be no assurance that the TUNA
System will be  successfully  commercialized  or that the Company  will  achieve
significant  revenues from either  international or domestic sales. In addition,
there can be no assurance that the Company will achieve or sustain profitability
in the future. Results of operations may fluctuate significantly from quarter to
quarter and will depend upon numerous  factors,  including  actions  relating to
regulatory and reimbursement matters, progress of clinical trials, the extent to
which the TUNA System gains market  acceptance,  varying pricing  promotions and
volume discounts to distributors,  introduction of alternative therapies for BPH
and competition.

         Uncertainty of Market Acceptance. VidaMed's TUNA Procedure represents a
new therapy  for BPH,  and there can be no  assurance  that the TUNA System will
gain any significant degree of market acceptance among physicians,  patients and
health  care  payors,   even  if  necessary   international  and  United  States
reimbursement  approvals  are obtained.  Physicians  will not recommend the TUNA
Procedure unless they conclude,  based on clinical data and other factors,  that
it is an attractive  alternative  to other methods of BPH  treatment,  including
more  established  methods  such  as  TURP  and  drug  therapy.  In  particular,
physicians  may elect not to recommend  the TUNA  Procedure  until such time, if
any,  as  the  duration  of  the  relief  provided  by the  procedure  has  been
established.  Broad use of the TUNA System will require the training of numerous
physicians,  and the time required to complete  such training  could result in a
delay or dampening of market acceptance.  Even with the clinical efficacy of the
TUNA Procedure established,  physicians may elect not to recommend the procedure
unless  acceptable  reimbursement  from health care payors is available.  Health
care payor  acceptance of the TUNA Procedure  will require  evidence of the cost
effectiveness  of TUNA as compared to other BPH therapies,  which will depend in
large part on the  duration  of the relief  provided  by the TUNA  Procedure.  A
thorough  analysis of  multi-year  patient  follow-up  data will be necessary to
assess the durability of the relief provided by TUNA therapy. Patient acceptance
of the  procedure  will depend in part on physician  recommendations  as well as
other  factors,  including the degree of  invasiveness  and rate and severity of
complications associated with the procedure as compared to other therapies.

         Uncertainty  Relating  to  Third  Party  Reimbursement.  The  Company's
success  will be  dependent  upon,  among  other  things,  its ability to obtain
satisfactory  reimbursement  from health care payors for the TUNA Procedure.  In
the United States and in  international  markets,  third party  reimbursement is
generally  available  for existing  therapies  used for treatment of BPH. In the
United  States,  third  party  reimbursement  for  the  TUNA  Procedure  will be
dependent  upon  decisions by the local  Medicare  Medical  Directors  who adopt
Medicare reimbursement guidelines based on current procedure terminology ("CPT")
codes  effective  January 1, 1998, as well as by individual  health  maintenance
organizations, private insurers and other payors.

                                      -3-
<PAGE>


         Reimbursement  systems in international  markets vary  significantly by
country.  Many  international  markets have  governmentally  managed health care
systems  that  govern  reimbursement  for new devices  and  procedures.  In most
markets,  there are private insurance systems as well as governmentally  managed
systems.  The Company has recently received  approvals by the Ministry of Health
and Welfare in Japan, and by the British Provident Association Ltd.
("BUPA"), the largest private health care insurer in the United Kingdom.

         Regardless of the type of  reimbursement  system,  the Company believes
that  physician  advocacy of the VidaMed  TUNA System will be required to obtain
reimbursement.  Availability  of  reimbursement  will  depend  not  only  on the
clinical  efficacy  and  direct  cost of the  TUNA  Procedure,  but  also on the
duration of the relief  provided by the procedure.  In the United  States,  TUNA
Procedures are currently being  reimbursed by certain  private payors.  However,
due  to  the  age  of  the  typical  BPH  patient,   Medicare  reimbursement  is
particularly  critical for widespread market acceptance of the TUNA Procedure in
the United States. CPT Code #53852,  covering the physician fee component of the
TUNA  Procedure,  was  included in the 1998  edition of CPT codes  which  became
effective January 1, 1998. If adopted by local Medicare Medical Directors,  this
code should  enhance the  reimbursement  process for  physicians  performing the
VidaMed TUNA Procedure in an outpatient  hospital  environment.  The CPT code is
active in over 30 states, although to date only a small number of the states has
a formal written policy  guideline  covering  reimbursement  of the VidaMed TUNA
Procedure.  Further,  national Medicare reimbursement of TUNA Procedure costs in
an office  setting at an adequate  level will require  completion  by the Health
Care Financing  Administration  ("HCFA") of a review of the cost and efficacy of
the TUNA  Procedure.  Such cost and efficacy review may involve an assessment of
clinical data with up to five-year patient follow-up.  Accordingly, there can be
no assurance that office-based  reimbursement for the Company's products will be
available  in  the  United  States  or in  international  markets  under  either
governmental  or private  reimbursement  systems  at  adequate  levels,  or that
physicians   will  support   reimbursement   for  the  VidaMed  TUNA  Procedure.
Furthermore, the Company could be adversely affected by changes in reimbursement
policies of governmental  or private health care payors.  Failure by physicians,
hospitals  and  other  users of the  Company's  products  to  obtain  sufficient
reimbursement  from  health  care  payors,   including  in  particular  Medicare
reimbursement  in the United  States,  or adverse  changes in  governmental  and
private  third  party  payors'  policies  toward  reimbursement  for  procedures
employing the Company's  products  would have a material  adverse  effect on the
Company's business, financial condition and results of operations.

         Risk of  Inadequate  Funding.  The Company  plans to continue to expend
substantial funds for clinical trials in support of regulatory and reimbursement
approvals, expansion of sales and marketing activities, research and development
and establishment of commercial scale manufacturing capability.  The Company may
be required to expend greater than anticipated funds if unforeseen  difficulties
arise in the course of clinical trials of the TUNA Procedure, in connection with
obtaining necessary  regulatory and reimbursement  approvals or in other aspects
of the  Company's  business.  Although  the  Company  believes  that  the  funds
available through the Company's  existing bank credit  facilities,  its existing
cash  reserves  and cash  generated  from the future  sale of  products  will be
sufficient to meet the Company's  operating and capital  requirements during the
next 12 months,  there can be no  assurance  that the  Company  will not require
additional  financing within this time frame. The Company's future liquidity and
capital  requirements will depend upon numerous factors,  including  progress of
clinical trials,  actions relating to regulatory and reimbursement  matters, and
the extent to which the TUNA System  gains  market  acceptance.  Any  additional
financing,  if required,  may not be available on satisfactory  terms or at all.
Future equity  financings may result in dilution to the holders of the Company's
Common Stock.  Future debt  financings  may require the Company to pledge assets
and to comply with financial and operational covenants.

         Possible  Volatility of Stock Price.  The stock market has from time to
time experienced significant price and volume fluctuations that are unrelated to
the  operating   performance  of  particular   companies.   These  broad  market
fluctuations  may  adversely  affect the market  price of the  Company's  Common
Stock. In addition, the 

                                      -4-

<PAGE>


market  price of the  shares  of Common  Stock is likely to be highly  volatile.
Factors such as fluctuations in the Company's  operating results,  announcements
of technological  innovations or new products by the Company or its competitors,
FDA and international  regulatory actions, actions with respect to reimbursement
matters,  developments  with respect to patents or  proprietary  rights,  public
concern as to the safety of products developed by the Company or others, changes
in health care policy in the United States and internationally, changes in stock
market  analyst  recommendations  regarding the Company,  other  medical  device
companies or the medical device industry generally and general market conditions
may have a significant effect on the market price of the Common Stock.

         Competition and Technological  Advances.  Competition in the market for
treatment  of BPH is intense and is expected to increase.  The Company  believes
its principal  competition will come from invasive therapies,  such as TURP, and
noninvasive  courses of action,  such as drug therapy and watchful waiting.  The
Company may encounter competition from emerging therapies in attracting clinical
investigators  as well  as  prospective  clinical  trial  patients.  Most of the
Company's competitors have significantly greater financial, technical, research,
marketing,  sales,  distribution and other resources than the Company. There can
be no assurance that the Company's competitors will not succeed in developing or
marketing  technologies  and products  that are more  effective or  commercially
attractive than any which are being developed by the Company.  Such developments
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and results of operations.

         Any product  developed  by the Company that gains  regulatory  approval
will have to compete for market acceptance and market share. An important factor
in such  competition  may be the timing of market  introduction  of  competitive
products.  Accordingly,  the  relative  speed with which the Company can develop
products,  complete  clinical testing and regulatory  approval  processes,  gain
reimbursement  acceptance and supply commercial quantities of the product to the
market are expected to be important  competitive  factors.  The Company  expects
that competition in the BPH field will also be based, among other things, on the
ability of the therapy to provide safe,  effective and lasting  treatment,  cost
effectiveness  of  the  therapy,   physician,  health  care  payor  and  patient
acceptance of the procedure,  patent position,  marketing and sales  capability,
and third party reimbursement policies.

         Government  Regulation.  The Company's  TUNA System is regulated in the
United States as a medical  device by the FDA under the Federal Food,  Drug, and
Cosmetic  Act  ("FDC  Act").  Pursuant  to the FDC Act,  the FDA  regulates  the
manufacture,  distribution  and  production  of  medical  devices  in the United
States.   Noncompliance  with  applicable  requirements  can  result  in  fines,
injunctions,  civil penalties,  recall or seizure of products,  total or partial
suspension  of  production,  failure of the  government  to grant  approval  for
devices,  and criminal  prosecution.  Medical devices are classified into one of
three  classes,  class I, II or III, on the basis of the  controls  necessary to
reasonably ensure their safety and  effectiveness.  The safety and effectiveness
can be assured for class I devices  through general  controls  (e.g.,  labeling,
premarket  notification  and adherence to GMPs) and for class II devices through
the  use  of  special   controls  (e.g.,   performance   standards,   postmarket
surveillance,  patient  registries,  and FDA guidelines).  Generally,  class III
devices are those  which must  receive  premarket  approval by the FDA to ensure
their  safety and  effectiveness  (e.g.,  life-sustaining,  life-supporting  and
implantable  devices,  or new  devices  which have not been found  substantially
equivalent to legally marketed devices).

         Before a new device can be introduced into the market, the manufacturer
must generally  obtain FDA clearance  through either a 510(k)  notification or a
premarket  approval ("PMA"). A 510(k) clearance will be granted if the submitted
data  establishes  that the proposed device is  "substantially  equivalent" to a
legally marketed class I or II medical device,  or to a class III medical device
for which the FDA has not called for a PMA. The FDA has recently been  requiring
a more rigorous  demonstration  of substantial  equivalence than in the past. It
generally  takes from three to nine  months from  submission  to obtain a 510(k)
clearance,  but it may

                                      -5-

<PAGE>


take longer. The FDA may determine that the proposed device is not substantially
equivalent,  or that additional data is needed before a substantial  equivalence
determination can be made. A "not substantially equivalent" determination,  or a
request for additional data, could delay the market introduction of new products
that fall into this category and could have a materially  adverse  effect on the
Company's business,  financial condition and results of operations. There can be
no assurance that the Company will obtain 510(k) clearance within the above time
frames,  if at  all,  for  any  device  for  which  it  files  a  future  510(k)
notification.  Furthermore,  there can be no assurance that the Company will not
be required to submit a PMA  application  for any device which it may develop in
the future.  For any of the  Company's  products  that are  cleared  through the
510(k)  process,   including  the  Company's  TUNA  System,   modifications   or
enhancements that could significantly affect safety or efficacy will require new
510(k) submissions.

         Sales of  medical  devices  outside  the United  States are  subject to
regulatory  requirements  that vary  widely from  country to  country.  The time
required  to  obtain  approval  for sale in a foreign  country  may be longer or
shorter than that required for FDA approval,  and the  requirements  may differ.
VidaMed has received regulatory  approvals where required for commercial sale of
the TUNA System in all major  international  markets.  In May 1994 the Company's
United Kingdom  facility passed  inspection by the United Kingdom  Department of
Health and  received GMP  certification.  In June 1994,  the Company  received a
report of compliance  for the TUNA System from the British  Standards  Institute
("BSI") and in August 1994 the Company received a certificate of compliance with
IEC 601-1 and IEC  601-2  regulations  from TUV  Product  Services.  TUV and BSI
certifications,  which are issued by  organizations  analogous  to  Underwriters
Laboratories in the United States, are focused on device safety and adherence of
the device to published  electronic  or mechanical  specifications.  In February
1995, the Company received ISO 9002 certification for its manufacturing facility
in the  United  Kingdom.  ISO  9002  certification  is  based  on  adherence  to
established  standards  in the  areas of  quality  assurance  and  manufacturing
process control.  These certifications allow the Company to affix the CE mark to
the VidaMed TUNA System,  permitting the Company to commercially market and sell
the TUNA System in all  countries of the  European  Economic  Area.  In order to
maintain  these  approvals,  the  Company is subject  to  periodic  inspections.
Additional product approvals from foreign regulatory authorities may be required
for international sale of the Company's general electrosurgical device for which
an FDA 510(k)  notification  has been filed.  Failure to comply with  applicable
regulatory  requirements can result in loss of previously received approvals and
other  sanctions  and could  have a  material  adverse  effect on the  Company's
business, financial condition and results of operations.

         The  Company's   distributor  in  Japan,  Century  Medical,   Inc.,  is
responsible  for  management  of clinical  trials and obtaining  regulatory  and
reimbursement  approval  for the  TUNA  System.  Such  regulatory  approval  was
received from the Japanese Ministry of Health and Welfare in July 1997. However,
failure  to obtain  market  acceptance  for the TUNA  Procedure  in Japan  could
preclude the commercial  viability of the Company's  products in Japan and could
have a material adverse effect on the Company's  business,  financial  condition
and results of operations.

         Limited Manufacturing  Experience;  Scale-Up Risk; Product Recall Risk.
VidaMed purchases  components used in the TUNA System from various suppliers and
relies on single  sources for several  components.  Delays  associated  with any
future  component   shortages,   particularly  as  the  Company  scales  up  its
manufacturing  activities in support of commercial sales,  could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.

         The Company's  United  Kingdom  manufacturing  of the VidaMed TUNA hand
piece had been only in limited quantities. The Company has limited experience in
manufacturing  its  products  in  commercial  quantities.   Manufacturers  often
encounter  difficulties  in scaling up  production  of new  products,  including
problems involving production yields,  quality control and assurance,  component
supply and lack of qualified personnel.

                                      -6-

<PAGE>


Difficulties  encountered  by VidaMed  in  manufacturing  scale-up  could have a
material  adverse  effect on its  business,  financial  condition and results of
operations.  In mid-1994, the Company experienced problems at its United Kingdom
facility  with  respect to  mechanical  aspects of the TUNA System hand  piece's
needle assembly.  As a result, a substantial portion of hand pieces in the field
were returned for rework. The Company has modified its manufacturing  process to
rectify these problems and has completed product rework.  However,  there can be
no assurance that future manufacturing  difficulties or product recalls,  either
of which  could  have a  material  adverse  effect  on the  Company's  business,
financial condition and results of operations,  will not occur. In addition, the
Company's new Fremont  facility has capacity to manufacture the TUNA System hand
piece and the Company is currently in the process of  qualifying  this  facility
under FDA good manufacturing  practice regulations and under ISO 9000 standards.
The Company is consolidating  manufacturing in Fremont.  Inability to obtain FDA
good manufacturing practice and ISO 9000 qualification for the Fremont facility,
or problems associated with the consolidation of manufacturing at such facility,
could have a material adverse effect on the Company's business.

         Any products manufactured or distributed by the Company pursuant to FDA
clearances or approvals are subject to pervasive  and  continuing  regulation by
FDA including  recordkeeping  requirements  and reporting of adverse  experience
with the use of the device. The Company's  manufacturing  facilities are subject
to periodic  inspection by FDA,  certain state  agencies and foreign  regulatory
agencies.  Failure to comply with regulatory  requirements could have a material
adverse  effect on the Company's  business.  There can be no assurance  that the
Company will not be required to incur  significant costs to comply with laws and
regulations in the future or that laws or  regulations  will not have a material
adverse effect upon the Company's business.

         Uncertainty Regarding Patents and Protection of Proprietary Technology.
The  Company  has been issued 34 United  States  patents and 34 foreign  patents
covering a method of prostate  ablation  using the  VidaMed  TUNA System and the
design of the TUNA  System.  The Company  currently  has 21 patent  applications
pending in the United States and 56 corresponding patent applications pending in
various foreign  countries.  In addition,  the Company holds licenses to certain
technology used in the TUNA System. There can be no assurance that the Company's
issued United States patents,  or any patents which may be issued as a result of
the Company's applications, will offer any degree of protection. There can be no
assurance that any of the Company's  patents or patent  applications will not be
challenged, invalidated or circumvented in the future. In addition, there can be
no assurance that competitors, many of which have substantial resources and have
made substantial investments in competing  technologies,  will not seek to apply
for and obtain patents that will prevent,  limit or interfere with the Company's
ability to make,  use or sell its  products  either in the  United  States or in
international markets.

         Intellectual Property Litigation Risks. The medical device industry has
been  characterized  by  extensive   litigation   regarding  patents  and  other
intellectual  property rights, and companies in the medical device industry have
employed intellectual property litigation to gain a competitive  advantage.  The
Company is aware of patents held by other  participants  in the BPH market,  and
there can be no assurance that the Company will not in the future become subject
to patent  infringement  claims  and  litigation  or United  States  Patent  and
Trademark Office ("USPTO") interference proceedings. The defense and prosecution
of intellectual property suits, USPTO interference proceedings and related legal
and  administrative  proceedings are both costly and time consuming.  Litigation
may be necessary to enforce  patents  issued to the  Company,  to protect  trade
secrets or know-how  owned by the Company or to  determine  the  enforceability,
scope and validity of the proprietary rights of others.

         Any litigation or interference  proceedings could result in substantial
expense to the  Company and  significant  diversion  of effort by the  Company's
technical and management  personnel.  An adverse  determination in litigation or
interference  proceedings  to which the Company may become a party could subject
the Company to  significant  liabilities to third parties or require the Company
to seek licenses from third parties.  Although

                                      -7-

<PAGE>


patent and intellectual  property disputes in the medical device area have often
been settled through  licensing or similar  arrangements,  costs associated with
such  arrangements  may be  substantial  and could  include  ongoing  royalties.
Furthermore,  there  can  be no  assurance  that  necessary  licenses  would  be
available  to the  Company  on  satisfactory  terms or at all.  Accordingly,  an
adverse  determination in a judicial or administrative  proceeding or failure to
obtain  necessary  licenses  could  prevent the Company from  manufacturing  and
selling  its  products,  which  would  have a  material  adverse  effect  on the
Company's business, financial condition and results of operations.

         In  addition  to  patents,  the  Company  relies on trade  secrets  and
proprietary  know-how,  which it seeks to protect,  in part, through proprietary
information  agreements  with  employees,  consultants  and other  parties.  The
Company's proprietary  information agreements with its employees and consultants
contain industry standard provisions requiring such individuals to assign to the
Company without additional  consideration any inventions conceived or reduced to
practice by them while employed or retained by the Company, subject to customary
exceptions.  There can be no assurance that proprietary  information  agreements
with employees,  consultants  and others will not be breached,  that the Company
would have adequate remedies for any breach, or that the Company's trade secrets
will not otherwise become known to or independently developed by competitors.

         Rights to  Founder's  Inventions  Limited to Urology.  The  proprietary
information  agreement  between the Company  and Stuart D.  Edwards,  one of the
Company's  founders,  obligates  Mr.  Edwards  to  assign  to  the  Company  his
inventions and related  intellectual  property only in the field of urology. Mr.
Edwards has assigned to Rita Medical  Systems,  Inc.  ("RITA") his inventions in
the cancer field. Mr. Edwards has conceived of, and may continue to conceive of,
various  medical  device  product  concepts for other fields outside of urology,
including  certain product concepts for the treatment of snoring and sleep apnea
that have been assigned to an unrelated third party and certain product concepts
in the  gynecology  field that have been  licensed  to another  unrelated  third
party. Such party also has an option to purchase all future technology developed
by Mr.  Edwards in the gynecology  field.  Product  concepts  outside of urology
developed by Mr. Edwards will not be owned by or commercialized through VidaMed,
and VidaMed will have no rights or ownership interests with respect thereto.

         Risks  Relating to RITA.  The Company has entered into a cross  license
agreement with RITA, formerly ZoMed International, Inc. Under the cross license,
RITA has the right to use VidaMed technology in the cancer field and VidaMed has
the right to use RITA  technology in the  treatment of  urological  diseases and
disorders.  The cross license  between VidaMed and RITA allows both companies to
develop  products  for  treatment  of  prostate  cancer and cancers of the lower
urinary  tract,  and VidaMed and RITA may therefore  become  competitors in this
field.

         Product Liability Risk; Limited Insurance Coverage. The business of the
Company entails the risk of product liability  claims.  Although the Company has
not experienced any product liability claims to date, any such claims could have
an adverse  impact on the  Company.  The  Company  maintains  product  liability
insurance and evaluates its insurance  requirements  on an ongoing basis.  There
can be no assurance that product liability claims will not exceed such insurance
coverage  limits  or that  such  insurance  will be  available  on  commercially
reasonable terms or at all.

         Effect  of  Certain  Charter,  Bylaw  and  Other  Provisions.   Certain
provisions of the Company's Certificate of Incorporation and Bylaws may have the
effect  of  making  it  more  difficult  for a third  party  to  acquire,  or of
discouraging a third party from  attempting to acquire,  control of the Company.
Such provisions could limit the price that certain investors might be willing to
pay in the future for shares of the  Company's  Common  Stock.  Certain of these
provisions  allow the  Company  to issue  Preferred  Stock  without  any vote or
further action by the  stockholders,  eliminate the right of stockholders to act
by written  consent  without a meeting and  eliminate  cumu-

                                      -8-

<PAGE>


lative voting in the election of directors.  These  provisions  may make it more
difficult for stockholders to take certain  corporate actions and could have the
effect of delaying or preventing a change in control of the Company.

         No  Public  Market  for the  Resale  Warrants  or the  Shelf  Warrants;
Arbitrary  Determination of Purchase Price;  Price Volatility.  The Company does
not intend to apply for the listing of the Resale Warrants or the Shelf Warrants
on any  exchange.  Accordingly,  there has been no public  market for the Resale
Warrants or the Shelf Warrants prior to the offering of the Resale  Warrants and
the Shelf Warrants,  and there can be no assurance that an active trading market
will  develop  in any of the Resale  Warrants  or the Shelf  Warrants  after any
offering  thereof.  The  exercise  price and terms of the Shelf  Warrants may be
determined  arbitrarily  by  negotiations  between the Company and any purchaser
thereof.  Factors  considered  in such  negotiations,  in addition to prevailing
market  conditions,  may include the history and  prospects  for the industry in
which the Company  competes,  an  assessment of the  Company's  management,  the
prospects of the Company,  its capital  structure  and certain  other factors as
were  deemed  relevant.  Therefore,  the  exercise  price and terms of the Shelf
Warrants may not  necessarily  bear any  relationship  to established  valuation
criteria and  therefore  may not be indicative of prices that may prevail at any
time  or from  time  to time in a  public  market  for the  Shelf  Warrants.  In
addition,  the exercise  price of the Resale  Warrants may not be  indicative of
prices that may prevail at any time or from time to time in a public  market for
the Resale Warrants.

         Legal  Restrictions  on Sales of Shares  Underlying the Resale Warrants
and the Shelf  Warrants.  The Resale Warrants and the Shelf Warrants will not be
exercisable  unless,  at the time of the  exercise,  the  Company  has a current
prospectus  covering the shares of Common Stock  issuable  upon  exercise of the
Resale  Warrants and the Shelf Warrants,  and such shares have been  registered,
qualified  or  deemed to be exempt  under  the  securities  laws of the state of
residence of the exercising holder of the Resale Warrants or the Shelf Warrants.
Although  the Company  has  undertaken  to use its best  efforts to have all the
shares of Common Stock  issuable  upon  exercise of the Resale  Warrants and the
Shelf  Warrants  registered  or qualified on or before the exercise  date and to
maintain a current  prospectus  relating  thereto  until the  expiration  of the
Resale Warrants and the Shelf  Warrants,  there can be no assurance that it will
be able to do so. The Resale  Warrants and the Shelf Warrants may be deprived of
value if a current prospectus  covering the shares of Common Stock issuable upon
the  exercise  of the  Resale  Warrants  and  the  Shelf  Warrants  is not  kept
effective.


                                 USE OF PROCEEDS

         None of the  proceeds  from  the  sale of the  Resale  Warrants  by the
Selling Warrant Holders will be received by the Company.

         Unless otherwise specified in the applicable  Prospectus Supplement for
any offering of Shelf  Securities,  the Company  intends to use the net proceeds
for general corporate purposes.

         Pending use of the proceeds in the Company's  business,  the funds will
be invested in short-term investment grade interest bearing instruments.

                                       -9-

<PAGE>


                             SELLING WARRANT HOLDERS

         The  Company  sold  2,517,652  shares  of Common  Stock and the  Resale
Warrants to the Selling  Warrant  Holders in private  transactions  in September
1997. Such shares of Common Stock, and the shares of Common Stock underlying the
Resale  Warrants,  were registered  under a Registration  Statement filed by the
Company on September 24, 1997 (File No.  333-36327) (the "Previous  Registration
Statement").  The  Resale  Warrants  offered  hereby  are  registered  under the
Registration Statement of which this Prospectus forms a part.

<TABLE>
         The following table provides the names of the Selling Warrant  Holders,
the  number  of  shares  of  Common  Stock  held by each of them at the time the
Previous Registration  Statement was declared effective and the number of Resale
Warrants being offered by each of them hereby.  After completion of the offering
of the Resale  Warrants,  assuming all the Resale  Warrants  offered  hereby are
sold, and, in the event any of the Resale  Warrants are exercised,  assuming the
shares of Common Stock issued upon such exercise are sold,  and assuming all the
shares of Common Stock registered under the Previous Registration  Statement are
sold, no Selling Warrant Holder will hold any securities of the Company,  except
as set forth in the footnotes below.

<CAPTION>
Selling Security Holders                           No. of Shares of Common Stock Held(1)         No. of Resale Warrants Offered
- --------------------------------------------------------------------------------------------------------------------------------
<S>                                                              <C>                                            <C>
INVESCO Trust Company(2)                                         1,052,632                                      263,158


Kane & Co.                                                         147,400                                       36,850
for Arthur D. Little Employee Investment Plan


Westcoast & Co.                                                    694,700                                      173,675
for State of Oregon PERS/ZCG


Mellon Bank N.A.                                                   210,500                                       52,625
Custodian for PERSI - Zesiger Capital for Public
Employee Retirement System of Idaho


ProMed Partners, LP                                                 55,264                                       13,816


David B. Musket                                                     41,364                                       10,341


Augusta Capital Management                                         105,264                                       26,316


Circle F Ventures (3)                                              210,528                                       52,632

<FN>
- -----------------------------------

(1)  At the time the Previous Registration Statement was declared effective.

(2)  Consists of shares held by Global  Health  Sciences  Fund.  GHS is a mutual
     fund company advised by INVESCO Funds Group, Inc., which is a subsidiary of
     INVESCO PLC.  INVESCO Trust Company is a subsidiary of INVESCO Funds Group,
     Inc.

(3)  At the time the Previous  Registration  Statement  was declared  effective,
     Circle F Ventures  owned  71,900  shares of Common  Stock of the Company in
     addition  to the  shares  of Common  Stock  registered  under the  Previous
     Registration Statement.
</FN>
</TABLE>

                                      -10-

<PAGE>


         No  Selling  Warrant  Holder  has held any  position,  office  or other
material  relationship with the Company or any of its predecessors or affiliates
within the past three years.

         Each  Selling  Warrant  Holder has  represented  to the Company that it
purchased  the Resale  Warrants  for  investment,  with no present  intention of
distribution.  However,  in recognition of the fact that investors,  even though
purchasing the Resale Warrants for investment,  may wish to be legally permitted
to sell their Resale Warrants when they deem appropriate,  the Company has filed
with the Commission  under the Securities  Act the  Registration  Statement with
respect  to the  resale of the Resale  Warrants  from time to time in  privately
negotiated transactions,  through the writing of options on the Resale Warrants,
or through a combination of the foregoing. The Company has agreed to prepare and
file such  amendments and  supplements to the  Registration  Statement as may be
necessary to keep the Registration  Statement  effective for four years from the
date of closing of the issuance of the Resale Warrants.


                              PLAN OF DISTRIBUTION

         The sale of the Resale  Warrants by the Selling  Warrant Holders may be
effected from time to time in transactions in privately negotiated transactions,
through the writing of options on the Resale Warrants,  or through a combination
of such methods of sale, at fixed prices,  that may be changed, at market prices
prevailing at the time of sale,  at prices  relating to such  prevailing  market
prices or at  negotiated  prices.  The Selling  Warrant  Holders may effect such
transactions  by selling the Resale Warrants to or through  broker-dealers,  and
such  broker-dealers  may  receive   compensation  in  the  form  of  discounts,
concessions  or  commissions   from  the  Selling  Warrant  Holders  and/or  the
purchasers of the Resale Warrants for whom such broker-dealers may act as agents
or to whom they may sell as  principals,  or both  (which  compensation  as to a
particular  broker-dealer  may be in  excess  of  customary  compensation).  Any
broker-dealer may act as a broker-dealer on behalf of one or more of the Selling
Warrant  Holders  in  connection  with the  offering  of  certain  of the Resale
Warrants by the Selling Warrant Holders.

         The  Selling  Warrant  Holders  and  any   broker-dealers  who  act  in
connection  with the sale of the Resale  Warrants  hereunder may be deemed to be
"underwriters"  within the meaning of Section 2(11) of the  Securities  Act, and
any commissions received by them and profit on any resale of the Resale Warrants
as principal might be deemed to be underwriting  discounts and commissions under
the  Securities  Act.  The Company has agreed to indemnify  the Selling  Warrant
Holders against certain liabilities,  including liabilities under the Securities
Act.

         The  Company  may sell the Shelf  Securities  to or through one or more
underwriters, and also may sell Shelf Securities directly to other purchasers or
through agents.

         The  distribution of the Shelf  Securities may be effected from time to
time in one or more  transactions  at a fixed  price  or  prices,  which  may be
changed,  at market prices  prevailing at the time of sale, at prices related to
such prevailing market prices or at negotiated prices.

         In  connection  with  the sale of Shelf  Securities,  underwriters  may
receive  compensation  from the Company or from purchasers of Shelf  Securities,
for whom  they may act as  agents,  in the form of  discounts,  concessions,  or
commissions.  Underwriters  may sell Shelf  Securities to or through dealers and
such dealers may receive compensation in the form of discounts,  concessions, or
commissions  from the  underwriters  and/or  commissions from the purchasers for
whom they may act as agents.  Any such  underwriter or agent will be identified,
and any such  compensation  received from the Company will be described,  in the
Prospectus Supplement.

                                      -11-

<PAGE>


         Any Shares  sold  pursuant  to a  Prospectus  Supplement  and any Shelf
Warrant Shares issuable upon exercise of any Shelf Warrants issued pursuant to a
Prospectus  Supplement are expected to be listed on the Nasdaq National  Market.
Unless otherwise specified in the related Prospectus Supplement,  each series of
Shelf  Warrants  will be a new issue with no  established  trading  market.  The
Company may elect to list any series of Shelf  Warrants on an  exchange,  but is
not obligated to do so. It is possible that one or more  underwriters may make a
market in a series of Shelf Warrants, but will not be obligated to do so and may
discontinue  any  market  making  at any  time  without  notice.  Therefore,  no
assurance  can be given as to the  liquidity of the trading  market of any Shelf
Securities.

         Under agreements the Company may enter into, underwriters,  dealers and
agents who participate in the  distribution of Shelf  Securities may be entitled
to  indemnification  by  the  Company  against  certain  liabilities,  including
liabilities under the Securities Act.

         Underwriters,  dealers and agents may engage in  transactions  with, or
perform  services for, or be customers of, the Company in the ordinary course of
business.


                            DESCRIPTION OF SECURITIES

         The  authorized  capital  stock of the Company  consists of  30,000,000
shares of Common  Stock,  $.001 par value per  share,  and  5,000,000  shares of
Preferred Stock,  $.001 par value per share. As of February 5, 1998,  15,231,101
shares of Common Stock were  outstanding,  held of record by  approximately  271
stockholders.  No shares of the Preferred Stock were  outstanding as of February
5, 1998,  although  30,000  shares of the  Preferred  Stock had been  designated
Series A  Participating  Preferred  Stock,  $.001 par value.  In addition,  each
outstanding share of Common Stock represented the Preferred Share Purchase Right
related thereto.

Resale Warrants

         The following  summary  description  of the Resale  Warrants sets forth
certain  general terms and provisions of the Resale  Warrants,  but such summary
does not purport to be complete and is qualified in all respects by reference to
the actual text of the Resale Warrant.

         Exercise  Price  and  Terms.  Each  Resale  Warrant  will  entitle  the
registered holder thereof to purchase, for three years commencing on the date of
issuance,  a fixed number of shares of Common Stock at $6.33 per share,  subject
to adjustment in accordance with the anti-dilution and other provisions referred
to below.  The holder of any Resale Warrant will be able to exercise such Resale
Warrant by  surrendering  the  certificate  representing  the Resale  Warrant to
American Securities Transfer,  Inc. (the "Warrant Agent"), with the subscription
form thereon  properly  completed  and  executed,  together  with payment of the
exercise price.  The Resale Warrants may be exercised at any time in whole or in
part at the applicable  exercise price until  expiration of the Resale Warrants.
No fractional shares will be issued upon the exercise of the Resale Warrants.

         The exercise price of the Resale  Warrants may bear no  relationship to
any  objective  criterion  of value  and  should in no event be  regarded  as an
indication of any future market price of the Common Stock.

         Adjustments.  The  exercise  price  and the  number of shares of Common
Stock  purchasable  upon the exercise of the Resale  Warrants will be subject to
adjustment  upon the  occurrence  of certain  events,  including  stock  splits,
reverse stock splits or combinations of the Common Stock, or sale by the Company
of shares of its Common Stock or other securities  convertible into Common Stock
at a price below the fair market  value of the Common  Stock.  Additionally,  an
adjustment may be made in the case of a  reclassification  or exchange of

                                      -12-

<PAGE>


Common  Stock,  consolidation  or merger  of the  Company  with or into  another
corporation  (other than a  consolidation  or merger in which the Company is the
surviving  corporation) or sale of all or substantially all of the assets of the
Company in order to enable  warrant  holders  to acquire  the kind and number of
shares of stock or other  securities  or property  receivable in such event by a
holder of the number of shares of Common  Stock that might  otherwise  have been
purchased upon the exercise of the Resale Warrant.

         Transfer,  Exchange  and  Exercise.  The  Resale  Warrants  will  be in
registered form and may be presented to the Warrant Agent for transfer, exchange
or exercise at any time on or prior to their  expiration date, at which time the
Resale  Warrants  will become  wholly void and of no value.  If a market for the
Resale Warrants  develops,  the holder may sell the Resale  Warrants  instead of
exercising  them.  There can be no  assurance,  however,  that a market  for the
Resale  Warrants  will  develop or continue  and the Company  does not intend to
apply for the listing of the Resale Warrants on any exchange.

         Warrant Holder Not a Stockholder.  The Resale  Warrants will not confer
upon  holders  any  voting,  dividend  or other  rights as  stockholders  of the
Company.

         The Resale Warrants will not be exercisable  unless, at the time of the
exercise,  the Company has a current  prospectus  covering  the shares of Common
Stock issuable upon exercise of the Resale  Warrants,  and such shares have been
registered,  qualified or deemed to be exempt under the  securities  laws of the
state of residence of the exercising holder of the Resale Warrants. Although the
Company has  undertaken to use its best efforts to have all the shares of Common
Stock issuable upon exercise of the Resale  Warrants  registered or qualified on
or before  the  exercise  date and to  maintain  a current  prospectus  relating
thereto until the expiration of the Resale  Warrants,  there can be no assurance
that it will be able to do so.

Shelf Warrants

         The  following  summary  description  of the Shelf  Warrants sets forth
certain  general  terms  and  provisions  of the  Shelf  Warrants  to which  any
Prospectus  Supplement  may  relate,  but such  summary  does not  purport to be
complete and is qualified in all respects by reference to the actual text of the
Shelf Warrant.

         Exercise  Price  and  Terms.   Each  Shelf  Warrant  will  entitle  the
registered holder thereof to purchase, for a fixed time period commencing on the
date of issuance,  a fixed number of shares of Common Stock at a fixed price per
share,  subject to  adjustment in accordance  with the  anti-dilution  and other
provisions  referred to below.  The holder of any Shelf  Warrant will be able to
exercise such Shelf Warrant by  surrendering  the certificate  representing  the
Shelf Warrant to American Securities Transfer, Inc., (the "Warrant Agent"), with
the  subscription  form thereon properly  completed and executed,  together with
payment of the exercise  price.  The Shelf Warrants may be exercised at any time
in whole or in part at the  applicable  exercise  price until  expiration of the
Shelf  Warrants.  No  fractional  shares will be issued upon the exercise of the
Shelf Warrants.

         The exercise  price of the Shelf Warrants may bear no  relationship  to
any  objective  criterion  of value  and  should in no event be  regarded  as an
indication of any future market price of the Common Stock.

         Adjustments.  The  exercise  price  and the  number of shares of Common
Stock  purchasable  upon the exercise of the Shelf  Warrants  will be subject to
adjustment  upon the  occurrence  of certain  events,  including  stock  splits,
reverse stock splits or combinations of the Common Stock, or sale by the Company
of shares of its Common Stock or other securities  convertible into Common Stock
at a price below the fair market  value of the Common  Stock.  Additionally,  an
adjustment may be made in the case of a  reclassification  or exchange of Common
Stock,  consolidation or merger of the Company with or into another  corporation
(other than a

                                      -13-

<PAGE>


consolidation  or merger in which the Company is the surviving  corporation)  or
sale of all or substantially all of the assets of the Company in order to enable
warrant  holders  to  acquire  the kind and  number  of shares of stock or other
securities  or  property  receivable  in such event by a holder of the number of
shares of Common  Stock  that  might  otherwise  have  been  purchased  upon the
exercise of the Shelf Warrant.

         Transfer,  Exchange  and  Exercise.  The  Shelf  Warrants  will  be  in
registered form and may be presented to the Warrant Agent for transfer, exchange
or exercise at any time on or prior to their  expiration date, at which time the
Shelf  Warrants  will become  wholly  void and of no value.  If a market for the
Shelf  Warrants  develops,  the  holder may sell the Shelf  Warrants  instead of
exercising them. There can be no assurance, however, that a market for the Shelf
Warrants  will  develop or continue and the Company does not intend to apply for
the listing of the Shelf Warrants on any exchange.

         Warrant  Holder Not a  Stockholder.  The Shelf Warrants will not confer
upon  holders  any  voting,  dividend  or other  rights as  stockholders  of the
Company.

         Modification  of Shelf  Warrant.  Modification  of the Shelf  Warrants,
including the  modification of the number of shares of Common Stock  purchasable
upon the exercise of any Shelf  Warrant,  the exercise  price and the expiration
date with respect to any Shelf Warrant,  will require the consent of the holders
of a majority of the Shelf Warrants.

         The Shelf Warrants will not be exercisable  unless,  at the time of the
exercise,  the Company has a current  prospectus  covering  the shares of Common
Stock  issuable upon exercise of the Shelf  Warrants,  and such shares have been
registered,  qualified or deemed to be exempt under the  securities  laws of the
state of residence of the exercising holder of the Shelf Warrants.  Although the
Company has  undertaken to use its best efforts to have all the shares of Common
Stock issuable upon exercise of the Shelf Warrants registered or qualified on or
before the exercise date and to maintain a current  prospectus  relating thereto
until the  expiration of the Shelf  Warrants,  there can be no assurance that it
will be able to do so.


                                  LEGAL MATTERS

         The validity of the Common Stock offered hereby will be passed upon for
VidaMed by Wilson  Sonsini  Goodrich & Rosati,  Professional  Corporation,  Palo
Alto, California.  As of the date of this Prospectus,  members of Wilson Sonsini
Goodrich & Rosati, Professional Corporation, who have represented the Company in
connection with the offering of the Resale Warrants and of the Shelf Securities,
beneficially own approximately  [8,809] shares of the Company's Common Stock. J.
Casey McGlynn, Secretary of the Company, and Christopher D. Mitchell,  Assistant
Secretary  of the  Company,  are  members of Wilson  Sonsini  Goodrich & Rosati,
Professional Corporation.


                                     EXPERTS

         The Consolidated  Financial Statements of VidaMed, Inc. incorporated by
reference in VidaMed, Inc.'s Annual Report (Form 10-K) for the fiscal year ended
December 31, 1996, have been audited by Ernst & Young LLP, independent auditors,
as set forth in their  report  thereon  incorporated  by  reference  therein and
incorporated  herein by reference.  Such Consolidated  Financial  Statements are
incorporated  herein by  reference  in reliance  upon such report given upon the
authority of such firm as experts in accounting and auditing.

                                      -14-

<PAGE>


================================================================================

     No dealer,  salesperson  or other person has been  authorized in connection
with  any  offering  made  hereby  to  give  any  information  or  to  make  any
representations  other than those  contained in or  incorporated by reference in
this Prospectus, and, if given or made, such information or representations must
not be  relied  upon  as  having  been  authorized.  This  Prospectus  does  not
constitute  an offer to sell or a  solicitation  of an offer to buy any security
other than the securities  offered  hereby,  nor do they  constitute an offer to
sell or a solicitation of any offer to buy any of the securities  offered hereby
to any person in any  jurisdiction in which such offer or solicitation  would be
unlawful or to any person to whom it is  unlawful.  Neither the delivery of this
Prospectus nor any offer or sale made hereunder shall,  under any circumstances,
create  any  implication  that  there has been no change in the  affairs  of the
Company  or that the  information  contained  herein is  correct  as of any time
subsequent to the date hereof.


                                -----------------
                                TABLE OF CONTENTS
                                -----------------

                                                                  Page
                                                                  ----
                 Available Information.........................    ii
                 Information Incorporated by Reference.........    ii
                 The Company...................................     1
                 Recent Developments...........................     2
                 Risk Factors..................................     3
                 Use of Proceeds ..............................     9
                 Selling Warrant Holders.......................    10
                 Plan of Distribution..........................    11
                 Description of Securities.....................    12
                 Legal Matters.................................    14
                 Experts.......................................    14


                                -----------------


                                 VIDAMED, INC.


                        6,000,000 Shares of Common Stock

                   2,629,413 Warrants to Purchase Common Stock

      2,000,000 Shares of Common Stock Issuable Upon Exercise of Warrants



                                -----------------
                                   PROSPECTUS
                                -----------------


                                 April 16, 1998

================================================================================



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