| Substance | Abbreviation | Systematics | Provings |
| Cabergolinum Cabergoline |
Caberg | Synthetic Drugs |
|
| Cabomba aquatica Fanwort |
Cabo-a | Cabombaceae |
|
| Cacatua galerita Sulphur-crested Cockatoo |
Cacat-g | Cacatuidae |
|
| Cacatua moluccensis Salmon-crested cockatoo |
Cacat-m | Cacatuidae |
|
| Cacatua sulphurea Yellow-crested Cockatoo |
Cacat-s | Cacatuidae |
|
| Caccinia strigosa |
Cacci-s | Boraginaceae |
|
| Cactina Alkaloid of Cactus |
Cactin | Cactaceae |
|
| Cactus grandiflorus Night-blooming Cereus |
Cact | Cactaceae |
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| Cactus grandiflorus e floribus Night-blooming Cereus flowers |
Cact-fl | Cactaceae |
|
| Cadmium arsenicosum |
Cadm-ar | Arsenicum Cadmium |
|
| Cadmium bromatum Cadmium Bromide |
Cadm-br | Cadmium |
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| Cadmium carbonicum |
Cadm-c | Cadmium Carbonium |
|
| Cadmium causticum |
Cadm-cau | Cadmium |








