- Cortispray
- Cortril
- Corynebacterium granulosum
- Corynebacterium granulosum P40
- Cosmegen
- Cotrim
- cottonseed meal toxin
- Coumadin
- coumarin
- coumestan
- coumestrol
- counseling
- Cowden disease
- Cowden syndrome
- COX inhibitor
- COX-2
- COX-2 inhibitor
- coxsackievirus A21
- Cozaar
- CP
- CP regimen
- CP-358,774
- CP-547,632
- CP-609,754
- CP-724,714
- CP/CPPS
- CP4071
- CpG 7909
- CpG oligodeoxynucleotide
- CpG oligodeoxynucleotide GNKG168
- CPT 11
- CQS
- CRA-024781
- cramp
- craniopharyngioma
- craniotomy
- creatine
- creatinine
- Crestor
- crib death
- cribriform
- crisis intervention
- crisnatol mesylate
- Cristanaspase
- Crixivan
- crizotinib
- CRO
- Crohn disease
- cross-talk
- cruciferous vegetable