| NAD+ Signalling and Aging |  | Signaling | 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Nicotinamide / Flavin adenine dinucleotide |
| NAD+ Signalling Pathway (Cancer) |  | Signaling | 5-O-phosphono-alpha-D-ribofuranosyl diphosphate / Nicotinamide / Flavin adenine dinucleotide |
| NADH Drug Metabolism |  | Metabolic | NADH |
| Nadolol Action Pathway |  | Drug Action | ATP / Nadolol / Potassium cation / Calcium |
| Nadolol B1-Adrenergic Cardiac Muscle Relaxation Action Pathway |  | Drug Action | ATP / Nadolol / Calcium |
| Nadolol B2-Adrenergic Vasoconstriction Action Pathway |  | Drug Action | ATP / Nadolol / Potassium cation / Calcium / Magnesium cation / Cyclic adenosine monophosphate |
| Nadolol Predicted Metabolism Pathway |  | Metabolic | Nadolol / Mesoheme |
| Nadroparin Action Pathway |  | Drug Action | Calcium / Nadroparin |
| Naftifine Action Pathway |  | Drug Action | Naftifine / Magnesium cation / Formic acid / Mesoheme / Flavin adenine dinucleotide / Ergosterol / Pyrophosphoric acid / Farnesyl diphosphate |
| Nalbuphine Action Pathway |  | Drug Action | ATP / Norepinephrine / Nalbuphine / Dopamine / Potassium cation / Calcium |
| Nalbuphine Opioid Antagonist Action Pathway |  | Drug Action | ATP / Nalbuphine / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Pyrophosphoric acid |
| Nalbuphine Predicted Metabolism Pathway |  | Metabolic | Nalbuphine / Mesoheme |
| Naldemedine Opioid Antagonist Action Pathway |  | Drug Action | ATP / Nitric Oxide / Calcium / Magnesium cation / Cyclic adenosine monophosphate / Acetylcholine / Pyrophosphoric acid / Naldemedine |
| Nalidixic acid Predicted Metabolism Pathway |  | Metabolic | Nalidixic acid / Mesoheme |
| Nalmefene Opioid Antagonist Action Pathway |  | Drug Action | ATP / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Pyrophosphoric acid / Nalmefene |
| Naloxegol Action Pathway |  | Drug Action | ATP / Nitric Oxide / Calcium / Magnesium cation / Cyclic adenosine monophosphate / Acetylcholine / Pyrophosphoric acid / Naloxegol |
| Naloxone Action Pathway |  | Drug Action | ATP / Norepinephrine / Dopamine / Naloxone / Potassium cation / Calcium |
| Naloxone Opioid Antagonist Action Pathway |  | Drug Action | ATP / Naloxone / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Pyrophosphoric acid |
| Naltrexone Action Pathway |  | Drug Action | ATP / Norepinephrine / Naltrexone / Dopamine / Potassium cation / Calcium |
| Naltrexone Metabolism |  | Metabolic | Naltrexone / Mesoheme |
| Naltrexone Opioid Antagonist Action Pathway |  | Drug Action | ATP / Naltrexone / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Pyrophosphoric acid |
| Naproxen Action Pathway |  | Drug Action | Glutamic acid / Glutathione / Naproxen / Dinoprostone / Calcium / Magnesium cation / Zinc / Prostaglandin D2 / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Naproxen NSAID Action Pathway |  | Drug Action | Glutathione / Naproxen / Dinoprostone / Calcium / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Naratriptan Mechanism of Action Action Pathway |  | Drug Action | ATP / Naratriptan / Calcium / Magnesium cation / Cyclic adenosine monophosphate / Pyrophosphoric acid |
| Natamycin Action Pathway |  | Drug Action | Natamycin / Ergosterol |