| Methionine Adenosyltransferase 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 |
| Methionine Metabolism |  | Metabolic | 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 |
| Methocarbamol Predicted Metabolism Pathway |  | Metabolic | Methocarbamol / Mesoheme |
| Methohexital Predicted Metabolism Pathway |  | Metabolic | Methohexital / Mesoheme |
| Methotrexate Action Pathway |  | Drug Action | Pyridoxal phosphate / Tetrahydrofolic acid / Glutamic acid / NADH / Folic acid / ATP / Methotrexate / Leucovorin / Calcium / Magnesium cation / Formic acid / Flavin adenine dinucleotide |
| Methotrexate Action Pathway (new) |  | Drug Action | Tetrahydrofolic acid / Glutamic acid / Folic acid / Methotrexate / AICA ribonucleotide / Deoxyuridine monophosphate |
| Methotrimeprazine Dopamine Antagonist Action Pathway |  | Drug Action | Pyridoxal phosphate / Tyrosine / Sapropterin / Dopamine / Levodopa / Calcium / Methotrimeprazine / Iron |
| Methoxamine Drug Metabolism |  | Metabolic | Methoxamine |
| Methoxsalen Predicted Metabolism Pathway |  | Metabolic | Methoxsalen / Mesoheme |
| Methoxyflurane Drug Metabolism |  | Metabolic | Methoxyflurane |
| Methsuximide Action Pathway |  | Drug Action | Pyridoxal phosphate / Glutamic acid / ATP / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Pyrophosphoric acid / Methsuximide |
| Methsuximide Drug Metabolism |  | Metabolic | Methsuximide |
| Methyclothiazide Action Pathway |  | Drug Action | Cysteine / Methyclothiazide / Potassium cation / Urea |
| Methyclothiazide Diuretic Action Pathway |  | Drug Action | Methyclothiazide / Potassium cation / Calcium |
| Methylchloroisothiazolinone Drug Metabolism |  | Metabolic | Methylchloroisothiazolinone |
| Methyldopa Action Pathway |  | Drug Action | Pyridoxal phosphate / Ascorbic acid / Tyrosine / Sapropterin / Norepinephrine / Dopamine / Levodopa / Calcium / Magnesium cation / Iron / Pyrroloquinoline Quinone |
| Methyldopa Metabolism Pathway |  | Metabolic | Pyridoxal phosphate / Ademetionine / Ascorbic acid / Methyldopa / Magnesium cation / Pyrroloquinoline Quinone / Uridine-5'-Diphosphate |
| Methylene blue Drug Metabolism |  | Metabolic | Methylene blue |
| Methylenetetrahydrofolate Reductase Deficiency (MTHFRD) |  | Disease | Pyridoxal phosphate / Tetrahydrofolic acid / Glutamic acid / NADH / Folic acid / ATP / Leucovorin / Calcium / Magnesium cation / Formic acid / Flavin adenine dinucleotide |
| Methylenetetrahydrofolate Reductase Deficiency (MTHFRD) |  | 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 |
| Methylenetetrahydrofolate Reductase Deficiency (MTHFRD) |  | 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 |
| Methylergometrine Mechanism of Action Action Pathway |  | Drug Action | Methylergometrine / Calcium / Magnesium cation |
| Methylhistidine Metabolism |  | Metabolic | Histidine / Ademetionine |
| Methylmalonate Semialdehyde Dehydrogenase Deficiency |  | Disease | Pyridoxal phosphate / Biotin / Succinic acid / Glutamic acid / Pyridoxal / Leucine / NADH / Valine / Isoleucine / ATP / Acetoacetic acid / Oxogluric acid / Flavin adenine dinucleotide / alpha-Ketoisocaproic acid / alpha-Ketoisovalerate / Methylmalonic Acid |
| Methylmalonate Semialdehyde Dehydrogenase Deficiency |  | Disease | Pyridoxal phosphate / Biotin / Succinic acid / Glutamic acid / Pyridoxal / Leucine / NADH / Valine / Isoleucine / ATP / Acetoacetic acid / Oxogluric acid / Flavin adenine dinucleotide / alpha-Ketoisocaproic acid / alpha-Ketoisovalerate / Methylmalonic Acid |