- Balsalazide
- Baricitinib
- Bendamustine
- Benserazide
- Benzalkonium Chloride
- Benzatropine
- Benzocaine
- Benzothiadiazine
- Benzydamine
- Bepotastine
- Betahistine
- Betamethasone
- Betaxolol
- Bicalutamide
- Bilastine
- Bisoprolol
- Bortezomib
- Bosentan
- Brexpiprazole
- Brimonidine
- Brinzolamide
- Bromfenac
- Bromhexine
- Bromopride
- Budesonide
- Bumetanide
- Bupivacaine
- Bupropion
- Buspirone
- Butamirate
- Butylated Hydroxy Toluene
- Butylparaben