- Abbott Laboratories
- AbbVie
- Addex
- ActivBiotics
- Akros Pharma, Inc.
- Alba Therapeutics
- Alizyme Therapeutics
- Allergan
- ALTANA Pharma
- Amgen Pharmaceuticals
- Ardelyx
- AstraZeneca
- Axcan Pharma
- Beckman Coulter
- Biolex
- Boehringer-Ingelheim
- Braintree
- Bristol-Myers Squibb
- Cell Pathways
- CellTech
- Colotech
- Conatus
- Eisai
- Exact Laboratories
| - Forest Laboratories
- Gilead Sciences
- GlaxoSmithKline
- Horizon
- Human Genome Sciences
- Indenix Pharmaceuticals
- InKine Pharmaceuticals
- Ironwood
- ISIS Pharmaceuticals
- Janssen Pharmaceuticals
- Kern-Mcneill International
- Lexicon
- Logical Therapeutics
- Merck & Co
- Microbia/Ironwood
- Mochida
- Novartis Pharmaceuticals
- Otsuka Maryland Research
- Institute
- OXIS International
- Pfizer Pharmaceuticals
- Pharmasset
- Pharmos
- Pozen
| - Proctor & Gamble
- Prometheus
- Roche
- Salix
- Sankyo
- Schering-Plough
- Shire Pharmaceuticals
- Solvay Pharmaceuticals
- Sucampo
- Synergy
- Synta
- Takeda
- TAP
- Tibotec
- Tioga Pharmaceuticals
- Trine
- UCB
- Ventrus Biosciences
- Vertex Pharmaceuticals
- ViroPharma
- Vivus
- Wyeth Pharmaceuticals
- Wyeth-Ayerst
- XenoPort
- Yamanouchi Pharma
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