| Sulfamerazine Predicted Metabolism Pathway |  | Metabolic | Sulfamerazine / Mesoheme |
| Sulfamethazine Predicted Metabolism Pathway |  | Metabolic | Sulfamethazine / Mesoheme |
| Sulfamethoxazole Predicted Metabolism Pathway |  | Metabolic | Sulfamethoxazole / Mesoheme |
| Sulfanilamide Action Pathway |  | Drug Action | Tetrahydrofolic acid / Glutamic acid / ATP / Sulfanilamide / Potassium cation / Magnesium cation / Aminobenzoic acid / Pyrophosphoric acid |
| Sulfasalazine Action Pathway |  | Drug Action | Glutathione / Mesalazine / Sulfasalazine / Sulfapyridine / Dinoprostone / Calcium / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Sulfate/Sulfite Metabolism |  | Metabolic | ATP / Estrone / Magnesium cation / Mesoheme / Propyl alcohol / Phenol / Pyrophosphoric acid / Estrone sulfate |
| Sulfite Oxidase Deficiency |  | Disease | ATP / Estrone / Magnesium cation / Mesoheme / Propyl alcohol / Phenol / Pyrophosphoric acid / Estrone sulfate |
| Sulfite Oxidase Deficiency |  | Disease | ATP / Estrone / Magnesium cation / Mesoheme / Propyl alcohol / Phenol / Pyrophosphoric acid / Estrone sulfate |
| Sulfoxone Predicted Metabolism Pathway |  | Metabolic | Sulfoxone / Mesoheme |
| Sulindac Action Pathway |  | Drug Action | Glutamic acid / Glutathione / Sulindac / Dinoprostone / Calcium / Magnesium cation / Zinc / Prostaglandin D2 / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Sulindac Action Pathway (New) |  | Drug Action | Glutathione / Sulindac / Dinoprostone / Calcium / Zinc / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Sulodexide Action Pathway |  | Drug Action | Calcium |
| Sulpiride Mechanism of Action Action Pathway |  | Drug Action | Pyridoxal phosphate / Tyrosine / Sapropterin / Sulpiride / Dopamine / Levodopa / Calcium / Iron |
| Sultopride Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Sultopride |
| Sumatriptan Mechanism of Action Action Pathway |  | Drug Action | ATP / Sumatriptan / Calcium / Magnesium cation / Cyclic adenosine monophosphate / Pyrophosphoric acid |
| Sunitinib Action Pathway |  | Drug Action | Sunitinib / Calcium |
| Suprofen Action Pathway |  | Drug Action | Glutamic acid / Glutathione / Suprofen / Dinoprostone / Calcium / Magnesium cation / Zinc / Prostaglandin D2 / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Suprofen NSAID Action Pathway |  | Drug Action | Glutathione / Suprofen / Dinoprostone / Calcium / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Synthetic camphor Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Synthetic camphor |
| Tacrine Action Pathway (new) |  | Drug Action | Choline / Tacrine / Calcium / Magnesium cation / Acetylcholine / Acetic acid |
| Tacrine Predicted Metabolism Pathway |  | Metabolic | Tacrine / Mesoheme |
| Tacrolimus Action Pathway |  | Drug Action | Tacrolimus / Calcium |
| Tafluprost Action Pathway |  | Drug Action | ATP / Potassium cation / Magnesium cation / Zinc / Cyclic adenosine monophosphate / Pyrophosphoric acid / Tafluprost |
| Talastine H1-Antihistamine Action |  | Drug Action | Calcium / Talastine |
| Talazoparib Drug Metabolism |  | Metabolic | Talazoparib |