By API Standards
- Acalabrutinib
- Acarbose
- Acebutolol
- Aceclofenac
- Acedoben
- Acetamenophen
- Acetazolamide
- Acotiamide
- Acrivastine
- Acyclovir
- Ademetionine
- AF38469
- Afatinib
- Agnuside
- Agomelatine
- Albendazole
- Alfa Lipoic acid
- Alimemazine
- Aliskiren
- Alogliptin
- Aloperine
- Alosetron
- Alverine
- Ambroxol
- AMG-510
- Amino acid
- Amino Acids
- Amiodarone
- Amisulpride
- Amitraz
- Amlodipine
- Amoxicillin
- Androsterone
- Apalutamide
- Apixaban
- Apremilast
- Arbutin
- Arginine
- Aripiprazole
- Artichoke Leaf
- Ascorbic acid
- Aspirin
- Atomoxetine
- Atorvastatin
- Atovaquone
- Atractylon
- Auxinole
- Avatrombopag
- Axitinib
- Azelnidipine
- Azilsartan