- Cabergoline
- Caffeine
- Calcipotriene
- Calcitonin
- Calcium
- Calfactant
- Candesartan
- Candida
- Capecitabine
- Capreomycin
- Captopril
- Carbachol
- Carbamazepine
- Carbenicillin
- Carbidopa
- Carbinoxamine
- Carboplatin
- Carboprost
- Carisoprodol
- Carmustine
- Carteolol
- Carvedilol
- Caspofungin
- Cefaclor
- Cefadroxil
- Cefamandole
- Cefazolin
- Cefdinir
- Cefepime
- Cefixime
- Cefotaxime
- Cefotetan
- Cefoxitin
- Cefpodoxime
- Cefprozil
- Ceftazidime
- Ceftibuten
- Ceftizoxime
- Ceftriaxone
- Cefuroxime
- Celecoxib
- Cellulose
- Cephalexin
- Cephradine
- Cervistatin
- Cetirizine
- Cetrorelix
- Cevimeline
- Charcoal
- Chloral Hydrate
- Chlorambucil
- Chloramphenicol
- Chlordiazepoxide
- Chlorhexidine
- Chloroprocaine
- Chloroquine
- Chlorothiazide
- Chlorpheniramine
- Chlorpromazine
- Chlorpropamide
- Chlorthalidone
- Chlorzoxazone
- Cholestyramine
- Choline
- Choriogonadotropin
- Chromium
- Ciclopirox
- Cidofovir
- Cilostizol
- Cimetidine
- Cinoxacin
- Ciprofloxacin
- Cisapride
- Cisatracurium
- Cisplatin
- Citalopram
- Cladribine
- Clarithromycin
- Clemastine
- Clindamycin
- Clobetasol
- Clocortolone
- Clofazimine
- Clofibrate
- Clomiphene
- Clomipramine
- Clonazepam
- Clonidine
- Clopidogrel
- Clorazepate
- Clotrimazole
- Clozapine
- Cocaine
- Codeine
- Colchicine
- Colesevelam
- Colestipol
- Colistimethate
- Collagen
- Collagenase
- Comvax
- Conjugated Estrogens
- Corticorelin
- Cortisone
- Cosyntropin
- Cotrimoxazole
- Cromolyn
- Crotalidae Polyvalent Immune Fab
- Crotamiton
- Cyclobenzaprine
- Cyclophosphamide
- Cycloserine
- Cyclosporine
- Cyproheptadine
- Cyproterone
- Cytarabine
- Cytisine
- Cytomegalovirus Immune Globulin
Also see:
- ..CaCl2(4)
- ..Cafcit(3)
- ..Campath(1)
- ..Canasa(4)
- ..Carbex(1)
- ..Caverject(1)
- ..Celebrex(1)
- ..Celestone(1)
- ..Cenestin(2)
- ..Cerezyme(1)
- ..Chantix(1)
- ..Chronulac(1)
- ..Cialis(2)
- ..Ciloxan(2)
- ..Cipramil(1)
- ..Clarinex(1)
- ..Claritin(1)
- ..Climara(4)
- ..Clindets(2)
- ..Clozaril(2)
- ..Comtan(1)
- ..Copegus(3)
- ..Coreg(1)
- ..Coumadin(2)
- ..Cozaar(2)
- ..Crestor(2)
- ..Crystal Meth(1)
- ..Cutivate(2)
- ..Cymbalta(1)