Cabergoline   17 studies
Caffeine   71 studies
Caffeine citrate   71 studies
Calanolide A   2 studies
Calcipotriene   27 studies
Calcitonin   31 studies
Calcitonin Gene-Related Peptide   31 studies
Calcitriol   67 studies
Calcium acetate   8 studies
Calcium Carbonate   60 studies
Calcium Channel Blockers   567 studies
Calcium heparin   240 studies
Calcium polycarbophil   6 studies
Calcium, Dietary   1327 studies
Calfactant   7 studies
Camphor   3 studies
Camptothecin   304 studies
Candesartan   77 studies
Candesartan cilexetil   77 studies
Canrenoate Potassium   1 study
Canrenone   1 study
Cantharidin   1 study
Capecitabine   591 studies
Capreomycin Sulfate   1 study
Capsaicin   52 studies
Captopril   14 studies
Carbachol   2 studies
Carbamazepine   56 studies
Carbidopa   58 studies
Carbimazole   1 study
Carbogen   2 studies
Carbon Monoxide   17 studies
Carbonic Anhydrase Inhibitors   60 studies
Carboplatin   991 studies
Carboxyamido-triazole   7 studies
Cardiac Glycosides   4 studies
Cardiovascular Agents   3897 studies
Carfentanil   1 study
Carisoprodol   4 studies
Carmustine   150 studies
Carnitine   49 studies
Carotenoids   38 studies
Carticaine   2 studies
Carvedilol   73 studies
Caseins   25 studies
Caspofungin   35 studies
Castor Oil   4 studies
Cathartics   57 studies
CD4 Immunoadhesins   8 studies
Cefadroxil   3 studies
Cefazolin   14 studies
Cefdinir   17 studies
Cefditoren   1 study
Cefditoren pivoxil   1 study
Cefepime   10 studies
Cefixime   39 studies
Cefmetazole   2 studies
Cefoperazone   2 studies
Cefotaxime   4 studies
Cefotetan   2 studies
Cefoxitin   4 studies
Cefpirome   1 study
Cefpodoxime   5 studies
Cefpodoxime proxetil   5 studies
Cefprozil   12 studies
Ceftazidime   13 studies
Ceftibuten   1 study
Ceftriaxone   41 studies
Cefuroxime   16 studies
Cefuroxime axetil   16 studies
Celecoxib   248 studies
Celiprolol   1 study
Central Nervous System Depressants   3207 studies
Central Nervous System Stimulants   558 studies
Cephalexin   7 studies
Cephalosporins   39 studies
Cerebrolysin   2 studies
Cerium nitrate   1 study
Certoparin   4 studies
Cethromycin   2 studies
Cetirizine   64 studies
Cetrorelix   17 studies
Cetuximab   332 studies
Cetylpyridinium   3 studies
Cevimeline   2 studies
Charcoal   2 studies
Chelating Agents   211 studies
Chenodeoxycholic Acid   4 studies
Chitosan   7 studies
Chloral Hydrate   3 studies
Chlorambucil   25 studies
Chloramphenicol   2 studies
Chloramphenicol succinate   2 studies
Chlordiazepoxide   2 studies
Chlorhexidine   77 studies
Chlorhexidine gluconate   77 studies
Chlorine dioxide   3 studies
Chloroguanide   16 studies
Chloroprocaine   2 studies
Chloroquine   50 studies
Chloroquine diphosphate   50 studies
Chlorothiazide   3 studies
Chlorpheniramine   5 studies
Chlorproguanil   14 studies
Chlorpromazine   4 studies
Chlorpropamide   1 study
Chlorprothixene   1 study
Chlorthalidone   16 studies
Chlorzoxazone   1 study
Cholecalciferol   138 studies
Cholecystokinin   8 studies
Cholera Toxin   2 studies
Cholestyramine   6 studies
Cholic Acids   4 studies
Choline   31 studies
Choline magnesium trisalicylate   1 study
Cholinergic Agents   915 studies
Cholinergic Antagonists   511 studies
Cholinesterase Inhibitors   204 studies
Chorionic Gonadotropin   28 studies
Chromium   38 studies
Ciclesonide   48 studies
Ciclopirox   4 studies
Cidofovir   20 studies
Cilastatin   10 studies
Cilazapril   2 studies
Cilnidipine   4 studies
Cilostazol   40 studies
Cimetidine   12 studies
Cineole   1 study
Ciprofibrate   1 study
Ciprofloxacin   70 studies
Cisatracurium   2 studies
Cisplatin   1248 studies
Citalopram   256 studies
Citric Acid   326 studies
Cladribine   35 studies
Clarithromycin   87 studies
Clavulanic Acids   51 studies
Clenbuterol   2 studies
Clindamycin   42 studies
Clindamycin-2-phosphate   42 studies
Clobazam   3 studies
Clobetasol   28 studies
Clodronic Acid   6 studies
Clofarabine   73 studies
Clofazimine   10 studies
Clofibrate   2 studies
Clofibric Acid   7 studies
Clomiphene   27 studies
Clomipramine   7 studies
Clonazepam   11 studies
Clonidine   61 studies
Clopenthixol   1 study
Clopidogrel   167 studies
Cloprostenol   8 studies
Clorazepate Dipotassium   1 study
Clotrimazole   1157 studies
Cloxacillin   6 studies
Clozapine   59 studies
CNI 1493   4 studies
Coagulase   3 studies
Cobalt   67 studies
Cocaethylene   1 study
Cocaine   238 studies
Cod Liver Oil   2 studies
Codeine   20 studies
Coenzyme Q10   31 studies
Colchicine   19 studies
Cold agglutinins   1 study
Colesevelam   24 studies
Colestipol   3 studies
Colistin   7 studies
Combretastatin   9 studies
Combretastatin A-4   8 studies
Complement C1 Inhibitor Protein   11 studies
Complement C1s   8 studies
Complement Factor H   3 studies
Contact Lens Solutions   4 studies
Contraceptive Agents   517 studies
Contraceptive Agents, Female   449 studies
Contraceptive Agents, Male   91 studies
Contraceptives, Oral   343 studies
Contraceptives, Oral, Combined   50 studies
Contraceptives, Oral, Hormonal   7 studies
Contraceptives, Oral, Sequential   8 studies
Contraceptives, Postcoital   67 studies
Copolymer 1   41 studies
Copper   36 studies
Copper Sulfate   2 studies
Cordycepin   2 studies
Corticotropin-Releasing Hormone   14 studies
Cortisol succinate   225 studies
Cortivazol   1 study
Cosyntropin   8 studies
CPG-oligonucleotide   4 studies
Cromolyn Sodium   2 studies
Curcumin   32 studies
Curdlan sulfate   1 study
Cycletanide   1 study
Cyclin-Dependent Kinase Inhibitor Proteins   8 studies
Cyclo(Trp-Asp-Pro-Val-Leu)   9 studies
Cyclobenzaprine   7 studies
Cyclooxygenase 2 Inhibitors   78 studies
Cyclooxygenase Inhibitors   804 studies
Cyclopentolate   2 studies
Cyclophosphamide   1482 studies
Cycloserine   43 studies
Cyclosporins   507 studies
Cyproheptadine   1 study
Cyproterone   12 studies
Cyproterone Acetate   12 studies
Cystatins   15 studies
Cysteamine   10 studies
Cytarabine   525 studies
Cytidine Diphosphate Choline   9 studies
Cytotoxic T-lymphocyte antigen 4   40 studies