| PRL-8-53 | 1432368-62-9 | | 2 |
| Phenindione | 83-12-5 | Vitamins | 2 |
| Phenyl salicylate | 23327-57-3 | NSAIDs | 2 |
| Phloroglucinol | 108-73-6 | | 2 |
| Phosphatidyl serine | 1446756-47-3 | | 2 |
| Piretanide | 55837-27-9 | Diuretics | 2 |
| Pirtobrutinib | 2101700-15-4 | Anticancer drugs | 2 |
| Pitolisant | 63547-13-7 | | 2 |
| Plecanatide | 467426-54-6 | | 2 |
| Pneumocandin B0 | 135575-42-7 | | 2 |
| Polynucleotides (PDRN) | 100403-24-5 | Dermatics | 2 |
| Polyquaternium-1 | | Excipients | 2 |
| Polysorbate 60 | | Excipients | 2 |
| Ponatinib | 943319-70-8 | Protein kinase inhibitors | 2 |
| Potassium Guaiacolsulfonate | | Cough medicines | 2 |
| Potassium acetate | 127-08-2 | Electrolytes | 2 |
| Potato starch | 9005-25-8 | Excipients | 2 |
| Povidone K-12 | | Excipients | 2 |
| Pralatrexate | 146464-95-1 | Antimetabolites | 2 |
| Pralidoxime | 6735-59-7 | Antidotes | 2 |
| Pramiracetam | 68497-62-1 | Other central nervous system agents | 2 |
| Pramoxine Hydrochloride | 637-58-1 | | 2 |
| Prednisolone Hemisuccinate | | Corticosteroids | 2 |
| Probucol | 23288-49-5 | Lipid-lowering agents | 2 |
| Propinox Hydrochloride | 2765-97-1 | Antispasmodics | 2 |
| Protirelin | 24305-27-9 | Hypothalamic hormones | 2 |
| Pyrazine hydrochloride | 762240-92-6 | | 2 |
| Pyridoxal | 66-72-8 | Vitamins | 2 |
| Pyridoxal Phosphate | 54-47-7 | Vitamins | 2 |
| Pyroglutamate | 149-87-1 | Nervous System Agents | 2 |
| Quinacrine | 83-89-6 | Antiprotozoics | 2 |
| Racemethionine | 59-51-8 | Other calcium Channel Blockers | 2 |
| Retapamulin | 224452-66-8 | Macrolides | 2 |
| Revefenacin intermediates | 107201-33-2 | | 2 |
| Ribonuclease | | Antineoplastics | 2 |
| Ribose | 50-69-1 | Cardiac stimulants | 2 |
| Ripretinib | 170729-80-3 | Protein kinase inhibitors | 2 |
| Risdiplam | 1825352-65-5 | Antimetabolites | 2 |
| Risedronate sodium | 118-55-8 | Bisphosphonates | 2 |
| Ropivacaine Hydrochloride | 132112-35-7 | | 2 |