- Advanced Scientific
- Albany Molecular Research, Inc.
- Angelini Group
- Antares Pharma Inc.
- Bentley Pharmaceuticals
- Britannia Pharmaceuticals Limited
- Cellomics, Inc. (now Thermo Fisher Scientific)
- Chiesi Farmaceutici SpA
- Cima Labs, Inc. (now Cephalon, Inc.)
- Cubist Pharmaceuticals
- Eisai Inc.
- Elan Corporation
- Elona Bio Technologies, Inc.
- Elusys Therapeutics, Inc.
- GlaxoSmithKline plc.
- Jelfa SA (now Sanitas AB)
- Kirin Pharmaceutical
- Kun Wha Pharmaceutical Co., Ltd.
- Lorus Therapeutics Inc.
- Nektar Therapeutics
- Neurex Corporation (now Elan Corporation)
- Neuronyx, Inc.
- Nosan Corporation
- NovaDel Pharma, Inc.
- Novartis AG
- NPS Pharmaceuticals Inc.
- Opocrin SPA
- Par Pharmaceutical
- Pharma-Pen, Inc. (now West Pharmaceuticals)
- Laboratories Pierre Fabre
- Polfa Kutno SA (now Teva Polska)
- Recordati S.p.A.
- Salix Pharmaceuticals Inc.
- Separation Technology, Inc. (now Thermo Fisher Scientific)
- Sigma-Tau Pharmaceuticals, Inc.
- Transduction Laboratories (now Becton, Dickinson and Company)
- US Pharmacia
- Amgen Inc.
- Asahi Kasei Pharma
- AstraZeneca PLC
- Aventis (now Sanofi-Aventis Group)
- Becton, Dickinson and Company
- Beaufour Ipsen Pharma
- BioRx
- Boehringer Ingelheim GmbH
- Bristol-Myers Squibb Company
- Eurand
- Ferring Pharmaceuticals
- Fresenius Kabi AG
- Ivax Corporation
- Janssen Pharmaceutica (now Ortho-McNeil-Janssen Pharmaceuticals, Inc.)
- Johnson & Johnson
- Eli Lilly and Company
- Meda Pharmaceuticals Inc.
- The Menarini Group
- Merck & Co., Inc.
- Mipharm SPA
- Mundipharma International Limited
- Nycomed International Management GmbH
- Pfizer Inc.
- Sankyo Pharmaceuticals (now Daiichi Sankyo)
- Shire Pharmaceuticals Group plc
- Spirig Pharma AG
- Valeas SPA
- Warner-Lambert Pharmaceutical Company (now Pfizer)
- West Pharmaceuticals
- Zambon Group S.p.A.
- Zynaxis
