| Abbreviation | Definition |
|---|---|
| CF | Consume with Food |
| CHC | combined hormonal contraceptive |
| CHOP | cyclophosphamide, doxorubicin, vincristine, and prednisone |
| CHOP-R | cyclophosphamide, doxorubicin, vincristine, and prednisone with rituximab |
| CIB | Cibus (with food) |
| CIM | Cimetidine |
| CMF | Cyclophosphamide, Methotrexate, 5-Fluorouracil |
| CMPD | Community Medication Prescription and Dispense |
| COP | Canadian On-line Pharmacy |
| COPP | cyclophosphamide, vincristine, procarbazine, prednisone |
| COPP | cyclophosphamide, vincristine, procarbazine, & prednisone |
| CPAP | continuous positive airway pressure |
| CPDS | College Prescription Drug Study |
| CPL | Chloramphenicol |
| CPPI | Campaign for Personal Prescription Importation |
| CPZ | chlorpromazine |
| CR | Cream |
| CRM | Cream |
| CRT | Conformal Radiation Therapy |
| CS | CorticoSteroids |