| Phenoxymethylpenicillin Predicted Metabolism Pathway |  | Metabolic | Phenoxymethylpenicillin / Mesoheme |
| Phenprocoumon Action Pathway |  | Drug Action | Phenprocoumon / Phylloquinone / Calcium |
| Phenserine Action Pathway |  | Drug Action | Choline / Calcium / Magnesium cation / Acetylcholine / Acetic acid / Phenserine |
| Phensuximide Drug Metabolism |  | Metabolic | Phensuximide |
| Phentermine Action Pathway |  | Drug Action | Pyridoxal phosphate / Ademetionine / Ascorbic acid / Tyrosine / NADH / Phentermine / Sapropterin / Norepinephrine / Dopamine / Levodopa / Magnesium cation / Iron / Flavin adenine dinucleotide / Pyrroloquinoline Quinone |
| Phentermine Norepinephrine Reuptake transporter Satiety Action Pathway |  | Drug Action | Pyridoxal phosphate / Ademetionine / Ascorbic acid / Tyrosine / NADH / Phentermine / Sapropterin / Norepinephrine / Dopamine / Levodopa / Magnesium cation / Iron / Flavin adenine dinucleotide / Pyrroloquinoline Quinone |
| Phenylacetate Metabolism |  | Metabolic | L-Glutamine / Adenosine phosphate / ATP / Magnesium cation / Pyrophosphoric acid |
| Phenylalanine and Tyrosine Metabolism |  | Metabolic | Pyridoxal phosphate / Phenylalanine / Adenosine phosphate / Tyrosine / Glutamic acid / ATP / Calcium / Magnesium cation / Iron / Acetoacetic acid / Oxogluric acid / Flavin adenine dinucleotide / Phenylpyruvic acid / Pyrophosphoric acid / Maleic acid / 4-Hydroxyphenylpyruvic acid / Homogentisic acid |
| Phenylbutazone Action Pathway |  | Drug Action | Glutamic acid / Glutathione / Phenylbutazone / Dinoprostone / Calcium / Magnesium cation / Zinc / Prostaglandin D2 / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Phenylbutazone Action Pathway (New) |  | Drug Action | Glutathione / Phenylbutazone / Dinoprostone / Calcium / Mesoheme / Prostaglandin G2 / Arachidonic Acid |
| Phenylbutazone Drug Metabolism |  | Metabolic | Phenylbutazone |
| Phenylketonuria |  | Disease | Pyridoxal phosphate / Phenylalanine / Adenosine phosphate / Tyrosine / Glutamic acid / ATP / Calcium / Magnesium cation / Iron / Acetoacetic acid / Oxogluric acid / Flavin adenine dinucleotide / Phenylpyruvic acid / Pyrophosphoric acid / Maleic acid / 4-Hydroxyphenylpyruvic acid / Homogentisic acid |
| Phenylketonuria |  | Disease | Pyridoxal phosphate / Phenylalanine / L-Glutamine / Adenosine phosphate / Tyrosine / Glutamic acid / Glycine / ATP / Calcium / Magnesium cation / Iron / Acetoacetic acid / Phenylacetaldehyde / (R)-Mandelic acid / Mesoheme / Oxogluric acid / Flavin adenine dinucleotide / Phenylpyruvic acid / Pyrophosphoric acid / Maleic acid / Phenethylamine / 4-Hydroxyphenylpyruvic acid / Homogentisic acid |
| Phenyltoloxamine H1-Antihistamine Action |  | Drug Action | Calcium / Phenyltoloxamine |
| Phenytoin (Antiarrhythmic) Action Pathway |  | Drug Action | Ademetionine / ATP / Phenytoin / Potassium cation / Calcium / Magnesium cation / Mesoheme / Flavin adenine dinucleotide / Uridine-5'-Diphosphate |
| Phenytoin Action Pathway (New) |  | Drug Action | Phenytoin / Potassium cation / Calcium |
| Phloxine B Drug Metabolism |  | Metabolic | Phloxine B |
| Phosphatidylcholine Biosynthesis |  | Metabolic | Ademetionine / Choline / ATP / Cytidine-5'-Triphosphate / N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium / Ethanolamine / Pyrophosphoric acid |
| Phosphatidylcholine Biosynthesis PC(11D3/11D3) |  | Metabolic | Ademetionine / Choline / ATP / Cytidine-5'-Triphosphate / N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium / Ethanolamine / Pyrophosphoric acid |
| Phosphatidylcholine Biosynthesis PC(11D3/11D5) |  | Metabolic | Ademetionine / Choline / ATP / Cytidine-5'-Triphosphate / N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium / Ethanolamine / Pyrophosphoric acid |
| Phosphatidylcholine Biosynthesis PC(11D3/11M3) |  | Metabolic | Ademetionine / Choline / ATP / Cytidine-5'-Triphosphate / N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium / Ethanolamine / Pyrophosphoric acid |
| Phosphatidylcholine Biosynthesis PC(11D3/11M5) |  | Metabolic | Ademetionine / Choline / ATP / Cytidine-5'-Triphosphate / N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium / Ethanolamine / Pyrophosphoric acid |
| Phosphatidylcholine Biosynthesis PC(11D3/13D5) |  | Metabolic | Ademetionine / Choline / ATP / Cytidine-5'-Triphosphate / N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium / Ethanolamine / Pyrophosphoric acid |
| Phosphatidylcholine Biosynthesis PC(11D3/13M5) |  | Metabolic | Ademetionine / Choline / ATP / Cytidine-5'-Triphosphate / N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium / Ethanolamine / Pyrophosphoric acid |
| Phosphatidylcholine Biosynthesis PC(11D3/9D3) |  | Metabolic | Ademetionine / Choline / ATP / Cytidine-5'-Triphosphate / N,N,N-Trimethyl-2-(phosphonooxy)ethanaminium / Ethanolamine / Pyrophosphoric acid |