| Hypoacetylaspartia |  | Disease | Pyridoxal phosphate / Arginine / Aspartic acid / L-Glutamine / Adenosine phosphate / Glutamic acid / Citrulline / ATP / Asparagine / Magnesium cation / Zinc / D-Aspartic Acid / Oxogluric acid / beta-Alanine / Flavin adenine dinucleotide / Acetic acid / Pyrophosphoric acid / N-Carbamoylaspartic acid / Maleic acid |
| Hypoacetylaspartia |  | Disease | Pyridoxal phosphate / Arginine / Aspartic acid / L-Glutamine / Adenosine phosphate / Glutamic acid / Citrulline / ATP / Asparagine / Magnesium cation / Zinc / D-Aspartic Acid / Oxogluric acid / beta-Alanine / Flavin adenine dinucleotide / Acetic acid / Pyrophosphoric acid / N-Carbamoylaspartic acid / Maleic acid |
| Hypophosphatasia |  | Disease | Pyridoxal phosphate / Pyridoxal / Pyridoxine / Magnesium cation / Zinc / Pyridoxamine-5'-Phosphate / Pyridoxine phosphate / Flavin adenine dinucleotide / Flavin mononucleotide |
| Hypophosphatasia |  | Disease | Pyridoxal phosphate / Pyridoxal / Pyridoxine / Magnesium cation / Zinc / Pyridoxamine-5'-Phosphate / Pyridoxine phosphate / Flavin adenine dinucleotide / Flavin mononucleotide |
| Ibalizumab Action Pathway |  | Drug Action | Magnesium cation / Ibalizumab |
| Ibandronate Action Pathway |  | Drug Action | Cholecalciferol / ATP / Ibandronate / Magnesium cation / Iron / Dimethylallyl Diphosphate / Formic acid / Geranyl Diphosphate / Mesoheme / Flavin adenine dinucleotide / Palmitic Acid / Pyrophosphoric acid / Cholesterol / ISOPENTENYL PYROPHOSPHATE / Farnesyl diphosphate |
| Ibandronate Action Pathway |  | Drug Action | ATP / Ibandronate / Magnesium cation / Dimethylallyl Diphosphate / Geranyl Diphosphate / Pyrophosphoric acid / Cholesterol / ISOPENTENYL PYROPHOSPHATE / Farnesyl diphosphate |
| Ibandronate Drug Metabolism |  | Metabolic | Ibandronate |
| Ibuprofen Action Pathway |  | Drug Action | Glutamic acid / Glutathione / Dinoprostone / Ibuprofen / Calcium / Magnesium cation / Zinc / Prostaglandin D2 / Mesoheme / Uridine-5'-Diphosphate / Prostaglandin G2 / Arachidonic Acid |
| Ibuprofen Metabolism Pathway |  | Drug Metabolism | Ibuprofen / Mesoheme / Uridine-5'-Diphosphate |
| Ibuprofen NSAID Action Pathway |  | Drug Action | Glutathione / Dinoprostone / Ibuprofen / Calcium / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Ibutilide Action Pathway |  | Drug Action | ATP / Ibutilide / Potassium cation / Calcium |
| Icosapent Prostaglandin G/H synthase 1 and 2 anti-inflammatory Action Pathway |  | Drug Action | Glutathione / Icosapent / Dinoprostone / Calcium / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Idarubicin Action Pathway |  | Drug Action | Idarubicin / Magnesium cation |
| Idoxuridine Action Pathway |  | Drug Action | Idoxuridine |
| Idoxuridine Drug Metabolism |  | Metabolic | Idoxuridine |
| Ifosfamide Action Pathway |  | Drug Action | NADH / Ifosfamide / Mesoheme / Acrylic Acid |
| Ifosfamide Alkylating Agent Action Pathway |  | Drug Action | NADH / Ifosfamide / Mesoheme / Acrylic Acid |
| Ifosfamide Metabolism Pathway |  | Drug Metabolism | NADH / Ifosfamide / Mesoheme / Acrylic Acid |
| Ifosfamide Predicted Metabolism Pathway |  | Metabolic | Ifosfamide / Mesoheme |
| Iloperidone Serotonin antagonist Action Pathway |  | Drug Action | Pyridoxal phosphate / Tryptophan / Sapropterin / Calcium / Iron / Oxitriptan / Iloperidone |
| Iloprost Action Pathway |  | Drug Action | Iloprost / Calcium / Magnesium cation / Cyclic adenosine monophosphate |
| Imatinib Inhibition of BCR-ABL |  | Drug Action | Imatinib |
| Iminoglycinuria |  | Disease | Cysteine / Potassium cation / Urea |
| Imipramine |  | Drug Metabolism | NADH / Imipramine / Desipramine / Mesoheme / Formaldehyde |