- C-Topical Solution
- Ca-DTPA
- Caduet
- Cafcit Intravenous
- Cafcit Oral
- Cafergot
- Caffeine and Sodium Benzoate
- Calamine Lotion
- Calan
- Calcibind
- Calciferol
- Calcitonin-Salmon
- Calcitrene
- Caldolor
- Calmoseptine
- Calomist
- Cambia
- Campath
- Campral
- Camptosar
- Canasa
- Cancidas
- Canges-XP
- Cantil
- Capastat Sulfate
- Capex
- Capitrol
- Capoten
- Capozide 2515
- Caprelsa
- Carac
- Carafate
- Carbaglu
- Carbatrol
- Carbetocin
- Carbihist
- Carbol-Fuchsin Solution (Topical Route)
- Cardene
- Cardene Oral
- Cardiogen-82 Generator
- Cardioquin
- Cardizem
- Cardizem Oral
- Cardura
- Carisoprodol and Aspirin
- Carisoprodol, Aspirin, and Codeine
- Carmol HC
- Carnitine
- Carticel
- Casodex
- Catapres
- Catapres-TTS-1
- Caverject
- Cayston
- Cedax
- Ceenu
- Cefotan
- Ceftin
- Cefzil
- CeleBREX
- Celestone
- CeleXA
- Cellcept Intravenous
- Cellcept Oral
- Celontin Kapseals
- Cenestin
- Cepacol Viractin
- Cephalexin
- Ceprotin
- CeraLyte 70
- Cerdelga
- Cerebyx
- Ceredase
- Ceretec
- Cerezyme
- Cerubidine
- Cervarix
- Cervidil
- Cesamet
- Cetirizine
- Cetraxal
- Cetrotide
- Chantix
- Chemet
- Chenodal
- Chlophedianol (Oral Route)
- Chloromycetin
- Chloromycetin Sodium Succinate
- Cholbam
- Choledyl Expectorant Elixir
- Choletec
- Choline C 11 331 mCi/mL INJECTION
- Chorex
- Chymodiactin
- Ciclodan
- Ciloxan
- Cimzia
- Cinobac
- Cipro
- Cipro Hc
- Cipro IV
- Ciprodex
- Cis Sulfur Colloid
- CIS-MDP
- Citalopram
- Citra pH
- Citracal Prenatal Rx
- CitraNatal 90 DHA
- Claforan
- Clarinex
- Clarinex-D
- Cleeravue-M
- Cleocin HCl
- Cleocin Phosphate IV
- Cleocin T
- Cleocin Vaginal
- Cleviprex
- Climara Pro
- Clinolipid
- Clinoril
- Clobevate
- Clolar
- Clomid
- Clorpres
- Clotrim Antifungal
- Clozaril
- Co-Gesic
- Coagadex
- Cobal
- Codrix
- Cognex
- Colazal
- Colcrys
- Colestid
- Coly-Mycin M
- Coly-Mycin S
- Colyte
- Combigan
- Combipatch
- Combivent
- Combivir
- Combunox
- Cometriq
- Comfort Pac Tizanidine
- Commit
- Compazine
- Complera
- Compound 347
- Compro
- Comtan
- Comvax
- Concerta
- Condylox
- Constulose
- Contrave
- ConZip
- Copaxone
- Copegus
- Copper Supplement
- Cordarone Injection
- Cordarone Oral
- Cordran
- Coreg
- Corgard
- Corifact
- Corlanor
- Cortef
- Cortenema
- Corticosteroid (Dental Route)
- Cortisone
- Cortisporin
- Cortisporin Otic Suspension
- Corvert
- Corzide
- Cosentyx
- Cosmegen
- Cosopt
- Cotellic
- Coumadin
- Covaryx
- Cozaar
- Creon
- Cresemba Intravenous
- Cresemba Oral
- Crestor
- Crixivan
- Crofab
- Crolom
- Cruex
- Cubicin
- Cuprimine
- Cutivate
- Cuvposa
- Cyanokit
- Cyclandelate (Oral Route)
- Cyclobenzaprine
- Cyclocort
- Cyclogyl
- Cyklokapron
- Cylert
- Cymbalta
- Cyproheptadine Hydrochloride
- Cyproterone
- Cyramza
- Cystadane
- Cystagon
- Cystaran
- Cystografin
- Cysview
- Cytadren
- Cytarabine (Oral Route)
- Cytomel
- Cytotec
- Cytovene
- Cytoxan