- abacavir
- abacavir hydrochloride
- abacavir sulfate
- abatacept
- abciximab
- abemaciclib
- abietis oil
- abiraterone acetate
- acamprosate
- acamprosate calcium
- acarbose
- acebutolol hydrochloride
- aceclofenac
- acemetacin
- acenocoumarol
- acetazolamide
- acetic acid
- acetylcholine chloride
- acetylcysteine
- acetylsalicylic acid
- aciclovir
- aciclovir sodium
- acipimox
- acitretin
- aclidinium bromide
- acrivastine
- activated charcoal
- activated dimeticone
- adalimumab
- adapalene
- adefovir dipivoxil
- adenosine
- adrenaline
- adrenaline acid tartrate
- adrenaline tartrate
- afatinib dimaleate
- aflibercept
- agalsidase alfa
- agalsidase beta
- agnus castus
- agomelatine
- alanine
- albiglutide
- albutrepenonacog alfa
- alcloxa
- Alder pollen (Alnus spp.)
- aldesleukin
- alectinib hydrochloride
- alemtuzumab
- alendronate sodium
- alendronate sodium trihydrate
- alexandrian senna fruit
- alfacalcidol
- alfentanil hydrochloride
- alfuzosin hydrochloride
- alginic acid
- alglucosidase alfa
- alimemazine tartrate
- alirocumab
- alitretinoin
- allantoin
- allopurinol
- almond oil
- almotriptan d, l-hydrogen malate
- aloes (cape) bp
- alogliptin benzoate
- alprazolam
- alprostadil
- alteplase
- alternaria alternata
- aluminium chloride hexahydrate
- aluminium hydroxide
- aluminium hydroxide gel
- aluminium hydroxide gel, dried
- aluminium sulfate
- alverine citrate
- ambrisentan
- amikacin sulfate
- amiloride hydrochloride
- amiloride hydrochloride anhydrous
- amiloride hydrochloride dihydrate
- aminoacridine hydrochloride
- aminophylline
- aminophylline hydrate
- amiodarone hydrochloride
- amisulpride
- amitriptyline hydrochloride
- amlodipine besilate
- amlodipine maleate
- amlodipine mesilate monohydrate
- ammonia liquor
- ammonia solution, aromatic
- ammonia solution, strong
- ammonium carbonate
- ammonium chloride
- ammonium salicylate
- amorolfine hydrochloride
- amoxicillin
- amoxicillin sodium
- amoxicillin trihydrate
- amphotericin
- amphotericin b
- ampicillin sodium
- ampicillin trihydrate
- amylmetacresol
- anagrelide
- anagrelide hydrochloride
- anagrelide hydrochloride monohydrate
- anakinra
- anastrozole
- anidulafungin
- antazoline sulfate
- antihaemophilic factor
- apalutamide
- apixaban
- apomorphine hydrochloride
- apomorphine hydrochloride hemihydrate
- apraclonidine hydrochloride
- apremilast
- aprepitant
- aprotinin
- arachis oil
- argatroban monohydrate
- arginine
- argipressin
- aripiprazole
- arnica montana
- arnica tincture
- arsenic trioxide
- artemether
- ascorbic acid
- asenapine maleate
- asfotase alfa
- asparaginase
- aspartic acid
- aspirin
- ataluren
- atazanavir sulfate
- atenolol
- atezolizumab
- atomoxetine hydrochloride
- atorvastatin calcium
- atorvastatin calcium hemihydrate
- atorvastatin calcium trihydrate
- atosiban acetate
- atovaquone
- atracurium besilate
- atropine sulfate
- atropine sulfate monohydrate
- autologous CD34+ enriched cell fraction that contains CD34+ cells transduced with retroviral vector that encodes for the human ADA cDNA sequence
- avanafil
- avelumab
- avibactam sodium
- axicabtagene ciloleucel
- axitinib
- azacitidine
- azathioprine
- azelaic acid
- azelastine hydrochloride
- azilsartan medoxomil potassium
- azithromycin
- azithromycin dihydrate
- azithromycin monohydrate
- aztreonam
- aztreonam lysine
