Abbott Laboratories
Allergan, Inc.
AstraZeneca (iPR Pharmaceuticals)

Aventis Behring
Aventis

Baxter
Biovail

Bristol-Myers Squibb Company
Cesar Castillo, Inc.
Ciba Geigy
Clairol
Eastman Chemical Company
Gilead Sciences
GlaxoSmithKline

INYX Inc. (Aventis Puerto Rico)

Imperial Oil
Mayne Pharma

McNeil Pharmaceuticals

Merck

Monsanto
Pall Life Sciences Puerto Rico LLC.
Pfizer
Phyto-Technologies, Inc.
Ross Products Division
South Dakota State Univ.
UDL Laboratories
Warner Lambert
Wyeth