Abacavir   120 studies
Abatacept   54 studies
Abciximab   39 studies
Abelcet   67 studies
Acamprosate   28 studies
Acarbose   14 studies
Acebutolol   3 studies
Aceclofenac   2 studies
Acenocoumarol   7 studies
Acetaminophen   176 studies
Acetazolamide   20 studies
Acetylcarnitine   10 studies
Acetylcholine   39 studies
Acetylcysteine   85 studies
Acetylmuramyl-Alanyl-Isoglutamine   3 studies
Acetylsalicylic acid lysinate   1 study
Acipimox   5 studies
Acitretin   12 studies
Actovegin   1 study
Acyclovir   69 studies
Adalimumab   116 studies
Adapalene   21 studies
Adderall   16 studies
Adefovir   73 studies
Adefovir dipivoxil   73 studies
Adenosine   64 studies
Adrenocorticotropic Hormone   26 studies
Adrenocorticotropin zinc   1 study
Adrenomedullin   2 studies
Ajmaline   1 study
AL 721   1 study
Alanosine   2 studies
Alatrofloxacin   1 study
Albendazole   26 studies
Albuterol   117 studies
Aldesleukin   256 studies
Alefacept   32 studies
Alemtuzumab   194 studies
Alendronate   90 studies
Alfentanil   8 studies
Alfuzosin   37 studies
Alginic acid   7 studies
Alitretinoin   9 studies
Allicin   3 studies
Allopurinol   35 studies
Allyl sulfide   2 studies
Almotriptan   8 studies
Alosetron   3 studies
Alovudine   6 studies
Alpha 1-Antitrypsin   25 studies
Alpha-Methyltyrosine   3 studies
Alpha-MSH   2 studies
Alpha-Tocopherol   124 studies
Alprazolam   27 studies
Alprostadil   15 studies
Altretamine   1 study
Aluminum Hydroxide   59 studies
Aluminum phosphate   3 studies
Aluminum sulfate   32 studies
Amantadine   30 studies
Ambroxol   3 studies
Amifostine   74 studies
Amikacin   13 studies
Amiloride   12 studies
Aminoglutethimide   2 studies
Aminolevulinic Acid   31 studies
Aminophylline   3 studies
Aminopterin   7 studies
Amiodarone   32 studies
Amitriptyline   37 studies
Amlodipine   160 studies
Ammonium trichloro(dioxoethylene-O,O'-)tellurate   6 studies
Amodiaquine   51 studies
Amonafide   4 studies
Amorolfin   1 study
Amoxicillin   96 studies
Amoxicillin-Potassium Clavulanate Combination   40 studies
Amphetamine   221 studies
Amphotericin B   67 studies
Amphotericin B-deoxycholate   7 studies
Ampicillin   15 studies
Ampligen   8 studies
Amprenavir   56 studies
Amrubicin   8 studies
Amsacrine   5 studies
Anagrelide   6 studies
Anastrozole   129 studies
Ancrod   3 studies
Angiopeptin   33 studies
Angiostatins   2 studies
Angiotensin I (1-7)   4 studies
Angiotensin II   335 studies
Anidulafungin   20 studies
Annamycin   3 studies
Annexin A5   8 studies
Anthranilic acid   1 study
Antibodies   1494 studies
Antibodies, Antineutrophil Cytoplasmic   2 studies
Antibodies, Antiphospholipid   6 studies
Antibodies, Bispecific   12 studies
Antibodies, Monoclonal   785 studies
Antilymphocyte Serum   202 studies
Antimony Sodium Gluconate   7 studies
Antiplasmin   54 studies
Antithrombin III   22 studies
Antitoxins   5 studies
Antivenins   10 studies
Antivitamins K   2 studies
Apomorphine   15 studies
Apraclonidine   1 study
Aprepitant   51 studies
Aprotinin   16 studies
Argatroban   9 studies
Arginine butyrate   3 studies
Arginine Vasopressin   63 studies
Aripiprazole   168 studies
Arsenic trioxide   85 studies
Artemether   49 studies
Artemether-lumefantrine combination   30 studies
Artemisinine   36 studies
Artemisinins   36 studies
Artesunate   87 studies
Arthrotec   1 study
Ascorbate-2-phosphate   1 study
Ascorbic Acid   114 studies
Asparaginase   94 studies
Aspirin   265 studies
Atamestane   4 studies
Atazanavir   87 studies
Atenolol   50 studies
Atomoxetine   106 studies
Atorvastatin   306 studies
Atosiban   3 studies
Atovaquone   19 studies
Atracurium   2 studies
Atrial natriuretic factor prohormone (95-126)   2 studies
Atropine   27 studies
Atropine sulfate-diphenoxylate hydrochloride combination   1 study
Autoantibodies   29 studies
Azacitidine   76 studies
Azathioprine   58 studies
Azelaic acid   5 studies
Azelastine   14 studies
Azimilide   7 studies
Azithromycin   146 studies
Azosemid   1 study
Aztreonam   12 studies