- B L H Trading
- B L Hua
- Balkanpharma Dupnista
- Bangkok Drug
- Bangkok Lab & Cosmetic PCL
- Bausch & Lomb
- Baxter Healthcare
- Baxter Oncology GmbH
- Bayer HealthCare Pharma
- Berich (Thailand) Co Ltd
- Berlin Pharm
- Besins Healthcare
- Bharat Biotech
- Bharat Serums and Vaccines
- Bio Farma
- Bio Sidus
- Biocodex
- BioGaia AB
- Biogenetech
- Biolab
- Biological E. Limited
- BioNet-Asia
- Biopharm
- Biovalys
- BJC Healthcare
- Blackmores
- Boehringer Ingelheim
- Boryung Pharm
- Boss Pharmacare
- BPL
- Bristol-Myers Squibb
- British Dispensary (L.P.)