<PAGE>
Registration No. 333-13729
Rule 424(b)(3)
ROBERTS PHARMACEUTICAL CORPORATION
Second Supplement to Prospectus
Dated November 7, 1996
The following information amends and supplements the information set
forth in the Prospectus of Roberts Pharmaceutical Corporation dated November 7,
1996. Capitalized terms used herein, unless otherwise defined, have the meanings
ascribed to them in the Prospectus.
SELLING SHAREHOLDERS
The Company has been advised that Overlook Performance Fund has
transferred 80,000 shares of Convertible Preferred Stock to Highbridge Capital
Corporation, and Chestnut Pacific Fund, the & Trust, Standard Global Equity
Partners, L.P., the Common Fund, Scorpion Offshore Investment Fund and Standard
Pacific Capital Offshore Fund, Ltd. have transferred an aggregate of 80,000
shares of Convertible Preferred Stock to Global Bermuda L.P., Lakeshore
International Ltd. and Merced Partners, L.P. As a result of such transactions,
the information set forth in the table presented under "Selling Shareholders" in
the Prospectus is hereby amended (with respect to certain entities that have
transferred the Convertible Preferred Stock) and supplemented (to add
information pertaining to the entities that have acquired the Convertible
Preferred Stock) as follows:
<TABLE>
<CAPTION>
Beneficial Ownership Number of Shares Beneficial Ownership
of Common Stock of Common Stock of Common Stock
Name of Selling Shareholders Prior to Offering (1) Being Offered After Offering (1)
- ---------------------------- --------------------- ---------------- ----------------------
Number of Percent Number of Percent of
Shares of Class Shares Class
--------- -------- --------- ---------
<S> <C> <C> <C> <C> <C>
Chestnut Pacific Fund................. 13,604 (3) 13,604 -0- -0-
The & Trust........................... 6,291 (3) 6,291 -0- -0-
Standard Global Equity
Partners, L.P. ..................... 34,156 (3) 34,156 -0- -0-
The Common Fund....................... 8,829 (3) 8,829 -0- -0-
Scorpion Offshore Investment Fund..... 100,846 (3) 100,846 -0- -0-
Standard Pacific Capital
Offshore Fund, Ltd.................. 10,072 (3) 10,072 -0- -0-
Overlook Performance Fund............. 86,899 (3) 86,899 -0- -0-
Global Bermuda LP..................... 86,899 (3) 86,899 -0- -0-
Lakeshore International Ltd........... 43,450 (3) 43,450 -0- -0-
Merced Partners....................... 43,450 (3) 43,450 -0- -0-
Highbridge Capital Corporation........ 173,747 (3) 173,747 -0- -0-
</TABLE>
The footnotes to the table presented above correspond to the footnotes to the
table presented under "Selling Shareholders" in the Prospectus.
The information set forth above does not reflect sales of Common Stock
that may have been effected by Selling Shareholders since November 7, 1996.
February 13, 1997
