Abacavir Abacavir + Lamivudine Abacavir + Lamivudine + Zidovudine Abatacept Abciximab Abiraterone Acamprosate Acarbose Acebutolol Aceclofenac Acemetacin Acenocoumarol Acetazolamide Acetylcholine Acetylcysteine Aciclovir Acipimox Acitretin Aclarubicin Acrivastine Acrivastine + Pseudoephedrine Adalimumab Adapalene Adefovir Adenosine Afatinib Aflibercept Agalsidase beta Agomelatine Ajmaline Albendazole Alclofenac Alclometasone Alcohol Alcuronium Aldesleukin Alemtuzumab Alendronic acid Alendronic acid + Colecalciferol Alfacalcidol Alpha-1 proteinase inhibitor, human Alprazolam Alprenolol Alprostadil Alteplase Altretamine Aluminium hydroxide Aluminium hydroxide + Magnesium hydroxide Alverine Amantadine Ambrisentan | Ambroxol Amcinonide Amfepramon Amifostine Amikacin Amiloride Amineptine Aminobenzoic acid Aminobutyric acid Aminocaproic acid Aminomethylbenzoic acid Aminophenazone Aminophylline Amiodarone Amisulpride Amitriptyline Amlexanox Amlodipine Amlodipine + Atenolol Amlodipine + Atorvastatin Amlodipine + Benazepril Amlodipine + Valsartan Ammonium chloride Amobarbital Amorolfine Amoxapine Amoxicillin Amoxicillin + Clavulanic acid Amphotericin B Ampicillin Ampicillin + Flucloxacillin Ampicillin + Sulbactam Amprenavir Amrinone Amsacrine Amylmetacresol Anagrelide Anakinra Anastrozole Androstanolone Anidulafungin Aniracetam Anistreplase Antazoline Anthraquinone glycosides + Salicylic acid Anti-D Immunoglobulins Antithrombin III Antithymocyte immunoglobulin, equine Antithymocyte immunoglobulin, rabbit Apalutamide Apixaban | Apomorphine Apraclonidine Aprepitant Aprindine Aprotinin Ardeparin Argatroban Arginine Aripiprazole Arsenic trioxide Artemether Artemether + Lumefantrine Atazanavir Atenolol Atenolol + Chlortalidone Atenolol + Nifedipine Atezolizumab Atomoxetine Atorvastatin Atosiban Atovaquone Atovaquone + Proguanil Atracurium besilate Atropine Auranofin Avanafil Axitinib Azacitidine Azapentacene polysulfonate sodium Azapropazone Azatadine Azathioprine Azelaic acid Artemisiae argyi Artemisinin Artesunate Ascorbic acid Asenapine Asparaginase Aspirin Aspirin + Dipyridamole Aspirin + Vitamin C AST-120 Astemizole Asunaprevir Azelastine Azithromycin Azlocillin Aztreonam |