- Accolate
- Accupril
- Accutane
- Aciclovir
- Aciphex
- Actonel
- Actos
- Adalat
- Advair
- Albendazole
- Albuterol
- Alcaine
- Aldactazide
- Aldactone
- Aldara
- Aldomet
- Alendronate
- Allegra
- Alphagan
- Altace
- Alupent
- Amaryl
- Ambien
- Amiloride
- Amitriptyline
- Amlodipine
- Amoxicillin
- Ampicillin
- Andriol
- Ansaid
- Antabuse
- Antivert
- Apresoline
- Aralen
- Arava
- Aricept
- Arimidex
- Armour Thyroid
- Arthrotec
- Asacol
- Astelin
- Atacand
- Atalak
- Atarax
- Atenolol
- Atorvastatin
- Atrovent
- Augmentin
- Avalide
- Avandia
- Avapro
- Avelox
- Axid
- Azitrocin
- Azmacort
- Azopt
- Azulfidine
