| Prilocaine Action Pathway |  | Drug Action | ATP / Norepinephrine / Prilocaine / Dopamine / Potassium cation / Calcium |
| Primaquine Predicted Metabolism Pathway |  | Metabolic | Primaquine / Mesoheme |
| Primary Hyperoxaluria II, PH2 |  | Disease | Pyruvic acid / Biotin / Adenosine phosphate / Glutathione / NADH / ATP / Potassium cation / Magnesium cation / Zinc / Phosphoenolpyruvate / Propylene glycol / Acetylphosphate / D-Lactic acid / Flavin adenine dinucleotide / Acetic acid / Pyruvaldehyde / Lactaldehyde / Pyrophosphoric acid / Malonyl-CoA |
| Primary Hyperoxaluria II, PH2 |  | Disease | Pyruvic acid / Biotin / Adenosine phosphate / Glutathione / NADH / ATP / Potassium cation / Magnesium cation / Zinc / Phosphoenolpyruvate / Propylene glycol / Acetylphosphate / D-Lactic acid / Flavin adenine dinucleotide / Acetic acid / Pyruvaldehyde / Lactaldehyde / Pyrophosphoric acid / Malonyl-CoA |
| Primary Hyperoxaluria Type I |  | Disease | Pyridoxal phosphate / Pyruvic acid / Biotin / Adenosine phosphate / Glutamic acid / Glycine / Alanine / ATP / Zinc / Oxogluric acid / Pyrophosphoric acid / Glyoxylic acid |
| Primary Hyperoxaluria Type I |  | Disease | Pyridoxal phosphate / Pyruvic acid / Biotin / Adenosine phosphate / Glutamic acid / Glycine / Alanine / ATP / Zinc / Oxogluric acid / Pyrophosphoric acid / Glyoxylic acid |
| Primidone Action Pathway |  | Drug Action | Pyridoxal phosphate / Glutamic acid / ATP / Primidone / Phenobarbital / Calcium / Magnesium cation / Cyclic adenosine monophosphate / gamma-Aminobutyric acid / Mesoheme / Pyrophosphoric acid |
| Procainamide (Antiarrhythmic) Action Pathway |  | Drug Action | ATP / Procainamide / Potassium cation / Calcium |
| Procainamide Action Pathway (New) |  | Drug Action | Procainamide / Potassium cation / Calcium / Cyclic adenosine monophosphate |
| Procaine Action Pathway |  | Drug Action | ATP / Norepinephrine / Procaine / Dopamine / Potassium cation / Calcium |
| Procaine benzylpenicillin Drug Metabolism |  | Metabolic | Procaine benzylpenicillin |
| Procaine merethoxylline Drug Metabolism |  | Metabolic | Procaine merethoxylline |
| Procaine NMDA Antagonist Action Pathway |  | Drug Action | L-Glutamine / Glutamic acid / Procaine / Calcium |
| Procaterol Action Pathway |  | Drug Action | ATP / Potassium cation / Procaterol / Calcium / Magnesium cation / Cyclic adenosine monophosphate |
| Procaterol Predicted Metabolism Pathway |  | Metabolic | Procaterol / Mesoheme |
| Prochlorperazine - Dopamine Antagonist Action Pathway |  | Drug Action | Pyridoxal phosphate / Tyrosine / Sapropterin / Prochlorperazine / Dopamine / Levodopa / Calcium / Iron |
| Prochlorperazine Mechanism of Action Action Pathway |  | Drug Action | Pyridoxal phosphate / Tyrosine / Sapropterin / Prochlorperazine / Dopamine / Levodopa / Calcium / Iron |
| Procyclidine Drug Metabolism |  | Metabolic | Procyclidine |
| Procyclidine M1 Antispasmodic Action Pathway |  | Drug Action | Choline / Procyclidine / Calcium / Magnesium cation / Acetylcholine / Acetic acid |
| Profenamine Action Pathway |  | Drug Action | L-Glutamine / Glutamic acid / Profenamine / Calcium |
| Proflavine Drug Metabolism |  | Metabolic | Proflavine |
| Progesterone Action Pathway |  | Drug Action | NADH / ATP / Progesterone / Testosterone / Estrone / Potassium cation / Calcium / Magnesium cation / Androstenedione / Cyclic adenosine monophosphate / Mesoheme / Pyrophosphoric acid / Cholesterol / 2-Hydroxyestradiol |
| Prolidase Deficiency (PD) |  | Disease | Pyridoxal phosphate / Ademetionine / Arginine / Aspartic acid / Ornithine / Adenosine phosphate / Succinic acid / Glutamic acid / Glycine / Creatine / Citrulline / NADH / ATP / Proline / Sapropterin / Nitric Oxide / Mesoheme / Glycocyamine / 3,4-Dihydro-2h-Pyrrolium-5-Carboxylate / Oxogluric acid / N(5)-[(hydroxyamino)(imino)methyl]-L-ornithine / Flavin adenine dinucleotide / Flavin mononucleotide / Urea / Pyrophosphoric acid / Maleic acid / 4-Carboxy-4-Aminobutanal |
| Prolinemia Type II |  | Disease | Pyridoxal phosphate / Ademetionine / Arginine / Aspartic acid / Ornithine / Adenosine phosphate / Succinic acid / Glutamic acid / Glycine / Creatine / Citrulline / NADH / ATP / Proline / Sapropterin / Nitric Oxide / Mesoheme / Glycocyamine / 3,4-Dihydro-2h-Pyrrolium-5-Carboxylate / Oxogluric acid / N(5)-[(hydroxyamino)(imino)methyl]-L-ornithine / Flavin adenine dinucleotide / Flavin mononucleotide / Urea / Pyrophosphoric acid / Maleic acid / 4-Carboxy-4-Aminobutanal |
| Prolinemia Type II |  | Disease | Pyridoxal phosphate / Ademetionine / Arginine / Aspartic acid / Ornithine / Adenosine phosphate / Succinic acid / Glutamic acid / Glycine / Creatine / Citrulline / NADH / ATP / Proline / Sapropterin / Nitric Oxide / Mesoheme / Glycocyamine / 3,4-Dihydro-2h-Pyrrolium-5-Carboxylate / Oxogluric acid / N(5)-[(hydroxyamino)(imino)methyl]-L-ornithine / Flavin adenine dinucleotide / Flavin mononucleotide / Urea / Pyrophosphoric acid / Maleic acid / 4-Carboxy-4-Aminobutanal |