| Neuronal Dopamine Gs Cascade |  | Physiological | Pyridoxal phosphate / Tyrosine / ATP / Dopamine / Levodopa / Calcium / Magnesium cation / Iron / Cyclic adenosine monophosphate / Pyrophosphoric acid |
| Nevirapine Action Pathway |  | Drug Action | Nevirapine |
| Nevirapine Anti-viral Action Pathway |  | Drug Action | Nevirapine |
| Nevirapine Metabolism Pathway |  | Drug Metabolism | ATP / Nevirapine / Mesoheme / Uridine-5'-Diphosphate |
| NGX267 Action Pathway |  | Drug Action | Choline / Calcium / Magnesium cation / Acetylcholine / Acetic acid / NGX267 |
| Niacinamide ascorbate Drug Metabolism |  | Metabolic | Niacinamide ascorbate |
| Nicardipine Action Pathway |  | Drug Action | ATP / Nicardipine / Calcium / Magnesium cation |
| Nicergoline Predicted Metabolism Pathway |  | Metabolic | Nicergoline / Mesoheme |
| Nicotinate and Nicotinamide Metabolism |  | Metabolic | Ademetionine / L-Glutamine / Adenosine phosphate / Glutamic acid / NADH / ATP / Niacin / Magnesium cation / 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Quinolinic Acid / Nicotinamide / Ribose-1-Phosphate / Flavin adenine dinucleotide / Pyrophosphoric acid |
| Nicotine Action Pathway |  | Drug Action | NADH / ATP / Nicotine / Norepinephrine / Dopamine / Potassium cation / Calcium / Mesoheme / Flavin adenine dinucleotide / Uridine-5'-Diphosphate / Formaldehyde |
| Nicotine Metabolism Pathway |  | Drug Metabolism | NADH / Nicotine / Mesoheme / Flavin adenine dinucleotide / Uridine-5'-Diphosphate / Formaldehyde |
| Nicotinic Acetylcholine |  | Physiological | Choline / Calcium / Magnesium cation / Acetylcholine |
| Nifedipine Action Pathway |  | Drug Action | ATP / Nifedipine / Potassium cation / Calcium |
| Nifedipine Action Pathway (New) |  | Drug Action | ATP / Nifedipine / Calcium / Magnesium cation |
| Nifurtimox Drug Metabolism |  | Metabolic | Nifurtimox |
| Nilotinib Inhibition of BCR-ABL Action Pathway |  | Drug Action | Nilotinib |
| Nilotinib Predicted Metabolism Pathway |  | Metabolic | Mesoheme / Nilotinib |
| Nilutamide Drug Metabolism |  | Metabolic | Nilutamide |
| Nilvadipine Action Pathway |  | Drug Action | ATP / Calcium / Magnesium cation / Nilvadipine |
| Nimodipine Action Pathway |  | Drug Action | ATP / Nimodipine / Potassium cation / Calcium |
| Nimodipine Action Pathway (New) |  | Drug Action | ATP / Nimodipine / Calcium / Magnesium cation |
| Nintedanib Action Pathway |  | Drug Action | Calcium / Nintedanib |
| Niraparib Drug Metabolism |  | Metabolic | Niraparib |
| Nirmatrelvir Action Pathway |  | Drug Action | Magnesium cation / Nirmatrelvir |
| Nisoldipine Action Pathway |  | Drug Action | ATP / Nisoldipine / Potassium cation / Calcium |