- OPTP
- Orasure Technologies, Inc.
- ORCA Products, LLC
- Ortho Biotech Products LP
- Owen Mumford
- Paddock Laboratories
- Pain Management Technologies, Inc.
- Palmero
- PDI - Professional Disposables, Intl.
- Perfecta Products, Inc.
- Performance Health
- Perrigo Pharmaceuticals
- Personna American Safety Razor Company
- Pfizer Injectable
- Pfizer Laboratories
- Pfizer, Inc.
- Pinnaclife, Inc.
- Pioneer Technology
- Plasti-Products, Inc.
- Power Distributors
- Power-Web
- Practicon
- Premier Biotech
- PrePak Products, Inc.
- Prestige Ameritech
