- Asacol
- Asbron G
- Ascarel
- Asceniv
- Asclera
- Ascomp with Codeine
- Ascor
- Ascor L NC
- Ascorbic Acid
- ascorbic acid (vit C) and calcium
- Ascot
- Ascriptin
- Ascriptin Enteric
- Asenapine
- Asendin
- Asepso
- Asepso Antiseptic
- Asepxia
- Asfotase alfa
- Ashlyna
- Asmalix
- AsmalPred Plus
- Asmanex
- Asmanex HFA
- Asparaginase
- Asparaginase Erwinia chrysanthemi
- Asparlas
- Asperdrink
- Aspergum
- Aspidrox
- Aspir-Low
- Aspir-Mox
- Aspir-trin
- Aspircaf
- Aspirin & dipyridamole
- Aspirin and omeprazole
- Aspirtab
- Aspoxicillin
- Astagraf
- Astelin
- Astemizole
- Astepro
- Asthmahaler
- Astramorph
- Astri-UC