| Cyclophosphamide Metabolism Pathway |  | Drug Metabolism | Glutathione / NADH / Cyclophosphamide / Mesoheme / Acrylic Acid |
| Cycloserine Drug Metabolism |  | Metabolic | Cycloserine |
| Cyclosporin A Action Pathway |  | Drug Action | Calcium |
| Cyclothiazide Action Pathway |  | Drug Action | Cysteine / Cyclothiazide / Potassium cation / Urea |
| Cyclothiazide Diuretic Action Pathway |  | Drug Action | Cyclothiazide / Potassium cation / Calcium |
| Cyclothiazide Drug Metabolism |  | Metabolic | Cyclothiazide |
| Cyproheptadine H1 Antihistamine Neurological Sleep Action Pathway |  | Drug Action | Pyridoxal phosphate / Histidine / Cyproheptadine / Calcium |
| Cyproheptadine H1 Antihistamine Smooth Muscle Relaxation Action Pathway |  | Drug Action | Cyproheptadine / Calcium / Magnesium cation |
| Cyproheptadine H1-Antihistamine Action |  | Drug Action | Cyproheptadine / Calcium |
| Cyproheptadine H1-Antihistamine Blood Vessel Constriction Action Pathway |  | Drug Action | Arginine / Citrulline / Sapropterin / Cyproheptadine / Nitric Oxide / Calcium / Magnesium cation / Mesoheme / Flavin adenine dinucleotide / Flavin mononucleotide |
| Cyproheptadine H1-Antihistamine Immune Response Action Pathway |  | Drug Action | Cyproheptadine / Calcium |
| Cyproheptadine Serotonin Antagonist Action Pathway |  | Drug Action | Pyridoxal phosphate / Tryptophan / Sapropterin / Cyproheptadine / Calcium / Iron / Oxitriptan |
| Cystathionine beta-Synthase Deficiency |  | Disease | Pyridoxal phosphate / Tetrahydrofolic acid / Ademetionine / Choline / Adenosine phosphate / Serine / Methionine / Glycine / Cysteine / NADH / ATP / Adenosine / Potassium cation / Magnesium cation / Zinc / Putrescine / N,N-dimethylglycine / 4-methylthio-2-oxobutanoic acid / Flavin adenine dinucleotide / Spermidine / Pyrophosphoric acid / L-Homoserine / 2-Oxobutanoic Acid |
| Cystathionine beta-Synthase Deficiency |  | Disease | Pyridoxal phosphate / Tetrahydrofolic acid / Ademetionine / Choline / Adenosine phosphate / Serine / Methionine / Glycine / Cysteine / NADH / ATP / Adenosine / Potassium cation / Magnesium cation / Zinc / Putrescine / N,N-dimethylglycine / 4-methylthio-2-oxobutanoic acid / Flavin adenine dinucleotide / Spermidine / Pyrophosphoric acid / L-Homoserine / 2-Oxobutanoic Acid |
| Cysteamine Drug Metabolism |  | Metabolic | Cysteamine |
| Cysteine Metabolism |  | Metabolic | Pyridoxal phosphate / Pyruvic acid / Adenosine phosphate / Glutamic acid / Cysteine / NADH / ATP / Iron / Zinc / Oxogluric acid / gamma-Glutamylcysteine / Pyrophosphoric acid |
| Cystinosis, Ocular Nonnephropathic |  | Disease | Pyridoxal phosphate / Pyruvic acid / Adenosine phosphate / Glutamic acid / Cysteine / NADH / ATP / Iron / Zinc / Oxogluric acid / gamma-Glutamylcysteine / Pyrophosphoric acid |
| Cystinosis, Ocular Nonnephropathic |  | Disease | Pyridoxal phosphate / Pyruvic acid / Adenosine phosphate / Glutamic acid / Cysteine / NADH / ATP / Iron / Zinc / Oxogluric acid / gamma-Glutamylcysteine / Pyrophosphoric acid |
| Cystinuria |  | Disease | Cysteine / Potassium cation / Urea |
| D-Arginine and D-Ornithine Metabolism |  | Metabolic | 3,4-Dihydro-2h-Pyrrolium-5-Carboxylate / Flavin adenine dinucleotide / Urea |
| D-Glyceric Acidura |  | Disease | NADH / ATP / sn-glycerol 3-phosphate / Flavin adenine dinucleotide / Palmitic Acid / Glycerin / Dihydroxyacetone phosphate |
| D-Glyceric Aciduria |  | Disease | NADH / ATP / sn-glycerol 3-phosphate / Flavin adenine dinucleotide / Palmitic Acid / Glycerin / Dihydroxyacetone phosphate |
| Dabigatran Etexilate Action Pathway |  | Drug Action | Calcium / Dabigatran etexilate |
| Dabrafenib Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Dabrafenib |
| Dacarbazine Action Pathway |  | Drug Action | Dacarbazine / Guanine / Mesoheme |