- Abacarvir
- Acarbose
- Acenocumarol
- Acetazolamid
- Acetylcystein
- Aciclovir
- Acitretin
- Acid acetylsalicylic (aspirin)
- Acid ascorbic (vitamin C)
- Acid boric
- Acid chenodeoxycholic
- Acid Ethacrynic
- Acid folic
- Acid iopanoic
- Acid nalidixic
- Acid – pantothenic
- Acid para – aminobenzoic
- Acid salicylic
- Acid tranexamic
- Acid valproic
- Acid amidotrizoic
- Acid aminocaproic
- Acid fusidic
- Acid ioxaglic
- Adenosin
- Adipiodon
- Albendazol
- Albumin
- Alcuronium
- Aldesleukin
- Alendronat – natri
- Alfuzosin Hydroclorid
- Alimemazin
- Alopurinol
- Alpha – tocopherol
- Alprazolam
- Alteplase
- Alverin citrat
- Amantadin
- Ambroxol
- Amikacin
- Amilorid hydroclorid
- Amiodaron
- Amitriptylin
- Amlodipin
- Amoxicilin
- Amoxicilin và clavulanat
- Amphotericin B
- Ampicilin
- Ampicilin và sulbactam
- Artemether
- Artemisinin
- Asparaginase
- Atapulgit
- Atenolol
- Atorvastatin
- Atropin
- Azathioprin
- Azithromycin
- Aztreonam