| Abacavir Sulfate |
| Acarbose |
| Acebutolol Hydrochloride* |
| Aceglatone |
| Acemetacin |
| Acetaminophen* |
| Acetazolamide* |
| Acetohexamide* |
| Acetylcholine Chloride for Injection* |
| Acetylcysteine |
| Acetylkitasamycin* |
| Acetylpheneturide |
| Acetylspiramycin* |
| Acitazanolast Hydrate |
| Aclarubicin Hydrochloride* |
| Aclatonium Napadisilate |
| Acrinol* |
| Actarit |
| Acyclovir |
| Adenine |
| Adipiodone* |
| Adrenochrome Monoaminoguanidine Mesilate |
| Afloqualone |
| Alacepril |
| Albendazole |
| Alclofenac |
| Alclometasone Dipropionate |
| Alendronate Sodium Hydrate |
| Alfacalcidol |
| Alimemazine Tartrate* |
| Allopurinol* |
| Allylestrenol |
| Alminoprofen |
| Alprazolam |
| Alprenolol Hydrochloride* |
| Alprostadil |
| Amantadine Hydrochloride* |
| Ambenonium Chloride* |
| Ambroxol Hydrochloride |
| Amcinonide |
| Amezinium Metilsulfate |
| Amfenac Sodium |
| Amidotrizoic Acid* |
| Amikacin Sulfate* |
| g-Amino-b-Hydroxybutyric Acid |
| g-Aminobutyric Acid |
| e-Aminocaproic Acid |
| Aminoethylsulfonic Acid |
| p-Aminohippurate Sodium |
| Amiodarone Hydrochloride |
| Amitriptyline Hydrochloride* |
| Amlexanox |
| Amlodipine Besilate |
| Amobarbital Sodium for Injection* |
| Amobarbital* |
| Amogastrin |
| Amorolfine Hydrochloride |
| Amosulalol Hydrochloride |
| Amoxapine* |
| Amoxicillin* |
| Amphotericin B* |
| Ampicillin Sodium* |
| Ampicillin* |
| Ampiroxicam |
| Amprenavir |
| Amrinone |
| Anastrozole |
| Anetholtrithion |
| Anhydrous Ampicillin* |
| Anhydrous Caffeine* |
| Anhydrous Citric Acid* |
| Aniracetam |
| Antimony Sodium Tartrate |
| Antipyrine* |
| Apraclonidine Hydrochloride |
| Aprindine Hydrochloride |
| Aranidipine |
| Arbekacin Sulfate |
| Argatroban |
| Arginine Hydrochloride* |
| Arotinolol Hydrochloride* |
| Ascorbic Acid* |
| l-Aspartate Potassium |
| Aspirin Aluminum* |
| Aspirin* |
| Aspoxicillin |
| Astemizole |
| Astromicin Sulfate* |
| Atenolol |
| Atorvastatin Calcium Hydrate |
| Atropine Sulfate* |
| Azasetron Hydrochloride |
| Azathioprine* |
| Azelastine Hydrochloride |
| Azithromycin Hydrate |
| Azosemide |
| Aztreonam |
| Azulene |