| BROMHEXINE HCL | 611-75-6 | | 2 |
| Butabarbital | 125-40-6 | Barbiturates | 2 |
| Butoconazole | 64872-76-0 | Antimycotics | 2 |
| Calamine | 8011-96-9 | Dermatics | 2 |
| Calcium sulfate dihydrate | 10101-41-4 | Calcium regulators | 2 |
| Capric triglyceride | 123465-33-8 | Lipid-lowering agents | 2 |
| Caprylic acid | 124-07-2 | Lipid-lowering agents | 2 |
| Carbachol | 51-83-2 | Parasympathomimetics | 2 |
| Carvedilol phosphate hemihydrate | 851220-85-4 | Alpha blockers | 2 |
| Castor oil hydrogenated | | Laxatives | 2 |
| Cefamandole | 34444-01-4 | Cephalosporins | 2 |
| Cefmenoxime | 65085-01-0 | Cephalosporins | 2 |
| Cefoperazone sodium | 62893-20-3 | | 2 |
| Cetuximab | 205923-56-4 | Monoclonal antibodies | 2 |
| Chloramphenicol Succinate | 3544-94-3 | Antibacterials | 2 |
| Chloramphenicol palmitate | 530-43-8 | Antibacterials | 2 |
| Chlorine | 7782-50-5 | Disinfectants | 2 |
| Chlorobutanol Hemihydrate | 6001-64-5 | Disinfectants | 2 |
| Chloroprocaine | 133-16-4 | Local anesthetics | 2 |
| Chondroitin Sulfate Sodium | 9082-07-9 | | 2 |
| Cinacalcet Hydrochloride | 364782-34-3 | | 2 |
| Cisatracurium besylate intermediates | 5884-22-0 | | 2 |
| Citric Acid Monohydrous | 5949-29-1 | | 2 |
| Clascoterone | 19608-29-8 | Anti-androgens | 2 |
| Clevidipine | 167221-71-8 | Calcium Channel Blockers | 2 |
| Clofedanol | 791-35-5 | Antitussives | 2 |
| Clonixin | 17737-65-4 | NSAIDs | 2 |
| Cloperastine | 3703-76-2 | Antitussives | 2 |
| Closantel Sodium | 61438-64-0 | | 2 |
| Clotiazepam | 33671-46-4 | Anxiolytics | 2 |
| Coal tar | | Coal tar preparations | 2 |
| Cobimetinib | 934660-93-2 | Protein kinase inhibitors | 2 |
| Colestipol | 26658-42-4 | Bile acid sequestrants | 2 |
| Condroitin Sulphate Sodium | 8068-37-9 | | 2 |
| Copper | 15158-11-9 | Minerals and electrolytes | 2 |
| Corn starch | | Other substances | 2 |
| Corticotropin | 12427-33-7 | Corticotropic hormones | 2 |
| Creatine | 57-00-1 | Dietary supplements | 2 |
| Cromoglicate Sodium | 15826-37-6 | Other respiratory tract agents | 2 |
| Crospovidone | | Excipients | 2 |