| Warfarin Action Pathway (New) |  | Drug Action | Warfarin / Phylloquinone / Calcium |
| Wolman Disease |  | Disease | Cholecalciferol / ATP / Magnesium cation / Iron / Dimethylallyl Diphosphate / Formic acid / Geranyl Diphosphate / Mesoheme / Flavin adenine dinucleotide / Palmitic Acid / Pyrophosphoric acid / Cholesterol / ISOPENTENYL PYROPHOSPHATE / Farnesyl diphosphate |
| Xanthine Dehydrogenase Deficiency (Xanthinuria) |  | Disease | Tetrahydrofolic acid / Aspartic acid / L-Glutamine / Adenosine phosphate / Glutamic acid / Glycine / NADH / ATP / Adenine / Adenosine / Potassium cation / Calcium / Magnesium cation / Zinc / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Uric acid / AICA ribonucleotide / Guanosine-5'-Monophosphate / Xanthine / Guanine / Cyclic adenosine monophosphate / Mesoheme / Guanosine / Ribose-1-Phosphate / Flavin adenine dinucleotide / Hypoxanthine / Pyrophosphoric acid / Maleic acid / Inosine / 2'-Deoxyguanosine-5'-Monophosphate |
| Xanthinuria Type I |  | Disease | Tetrahydrofolic acid / Aspartic acid / L-Glutamine / Adenosine phosphate / Glutamic acid / Glycine / NADH / ATP / Adenine / Adenosine / Potassium cation / Calcium / Magnesium cation / Zinc / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Uric acid / AICA ribonucleotide / Guanosine-5'-Monophosphate / Xanthine / Guanine / Cyclic adenosine monophosphate / Mesoheme / Guanosine / Ribose-1-Phosphate / Flavin adenine dinucleotide / Hypoxanthine / Pyrophosphoric acid / Maleic acid / Inosine / 2'-Deoxyguanosine-5'-Monophosphate |
| Xanthinuria Type I |  | Disease | Tetrahydrofolic acid / Aspartic acid / L-Glutamine / Adenosine phosphate / Glutamic acid / Glycine / NADH / ATP / Adenine / Adenosine / Potassium cation / Calcium / Magnesium cation / Zinc / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Uric acid / AICA ribonucleotide / Guanosine-5'-Monophosphate / Xanthine / Guanine / Cyclic adenosine monophosphate / Mesoheme / Guanosine / Ribose-1-Phosphate / Flavin adenine dinucleotide / Hypoxanthine / Pyrophosphoric acid / Maleic acid / Inosine / 2'-Deoxyguanosine-5'-Monophosphate |
| Xanthinuria Type II |  | Disease | Tetrahydrofolic acid / Aspartic acid / L-Glutamine / Adenosine phosphate / Glutamic acid / Glycine / NADH / ATP / Adenine / Adenosine / Potassium cation / Calcium / Magnesium cation / Zinc / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Uric acid / AICA ribonucleotide / Guanosine-5'-Monophosphate / Xanthine / Guanine / Cyclic adenosine monophosphate / Mesoheme / Guanosine / Ribose-1-Phosphate / Flavin adenine dinucleotide / Hypoxanthine / Pyrophosphoric acid / Maleic acid / Inosine / 2'-Deoxyguanosine-5'-Monophosphate |
| Xanthinuria Type II |  | Disease | Tetrahydrofolic acid / Aspartic acid / L-Glutamine / Adenosine phosphate / Glutamic acid / Glycine / NADH / ATP / Adenine / Adenosine / Potassium cation / Calcium / Magnesium cation / Zinc / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Uric acid / AICA ribonucleotide / Guanosine-5'-Monophosphate / Xanthine / Guanine / Cyclic adenosine monophosphate / Mesoheme / Guanosine / Ribose-1-Phosphate / Flavin adenine dinucleotide / Hypoxanthine / Pyrophosphoric acid / Maleic acid / Inosine / 2'-Deoxyguanosine-5'-Monophosphate |
| Ximelagatran Action Pathway |  | Drug Action | Phylloquinone / Calcium / Ximelagatran |
| Ximelagatran Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Ximelagatran |
| Xylometazoline Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Xylometazoline |
| Yohimbine Predicted Metabolism Pathway |  | Metabolic | Yohimbine / Mesoheme |
| Zafirlukast Predicted Metabolism Pathway |  | Metabolic | Zafirlukast / Mesoheme |
| Zalcitabine Action Pathway |  | Drug Action | Zalcitabine |
| Zalcitabine Action Pathway (New) |  | Drug Action | Zalcitabine / Magnesium cation |
| Zalcitabine Predicted Metabolism Pathway |  | Metabolic | Zalcitabine / Mesoheme |
| Zaleplon Action Pathway |  | Drug Action | Pyridoxal phosphate / Glutamic acid / ATP / Zaleplon / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Pyrophosphoric acid |
| Zanamivir Action Pathway |  | Drug Action | Zanamivir / Calcium |
| Zanubrutinib Drug Metabolism |  | Metabolic | Zanubrutinib |
| Zellweger Syndrome |  | Disease | Glycine / NADH / ATP / Iron / Taurine / Mesoheme / Cholic Acid / Flavin adenine dinucleotide / Palmitic Acid / Pyrophosphoric acid / Taurocholic acid / Cholesterol / Chenodeoxycholic acid / Deoxycholic acid / Taurochenodeoxycholic acid |
| Zellweger Syndrome |  | Disease | Glycine / NADH / ATP / Iron / Taurine / Mesoheme / Cholic Acid / Flavin adenine dinucleotide / Palmitic Acid / Pyrophosphoric acid / Taurocholic acid / Cholesterol / Chenodeoxycholic acid / Deoxycholic acid / Taurochenodeoxycholic acid |
| Ziconotide Analgesia Action Pathway |  | Drug Action | Glutamic acid / Calcium / Sar9, Met (O2)11-Substance P / Ziconotide |
| Ziconotide NMDA and Substance P Receptor Pain Inhibition Action Pathway |  | Drug Action | Glutamic acid / Calcium / Sar9, Met (O2)11-Substance P / Ziconotide |
| Zidovudine Action Pathway |  | Drug Action | Zidovudine |
| Zidovudine Anti-Viral Action Pathway |  | Drug Action | ATP / Zidovudine / Magnesium cation |
| Zileuton Predicted Metabolism Pathway |  | Metabolic | Zileuton / Mesoheme |