| Actonel | | azelastine hydrochloride (antiallergy) - nasal |
| Abilify | | amoxicillin clavulanate (antibiotic) bacterial infections |
| Adderall | | lorazepam (antianxiety) - benzodiazepine |
| Altace | | candesartan (antihypertensive) |
| Astelin | | donepezil (Alzheimer's Disease) |
| Atacand | | resiglitazone (antidiabetic) |
| Ativan | | anastrozole (antineoplastic) 1st line treatment Breast |
| Augmentin | | C-II amphetamine/dextroamphetimine ADD ADHD |
| Avandia | | aripiprazole (antipsychotic) |
| Airmiidex | | risedronate (osteoperosis) |
| Ambien | | zolpidem (insomnia) |
| Amoxil or trimox | | amoxicillin (antibiotic) - bacterial infection |
| Aricept | | antihypertensive - ACE inhibitor |
| Aspirin | | the acetylated derivative of salicylic acid |