By API Standards
- P7C3-A21
- Paclitaxel
- Pacritinib
- Palbociclib
- Paliperidone
- Pantoprazole
- Paraben
- Paracetamol
- Paroxetine
- Pazopanib
- Penicillin
- Pentoxyfylline
- Perampanel
- Perindopril
- Perindoprilat D4
- Perphenazine
- Phenacetin
- Phenethyl
- Phenindione
- Phenothiazine
- Phenylephrine
- PHPB
- Pimavanserine
- Pimobendan
- Pimozide
- Pioglitazone
- Piperaquine
- Piperaquinoline
- Pirfenidone
- Piribedil
- Piroxicam
- Pitavastatin
- Pitofenone
- Pitolisant
- Plerixafor
- Pomalidomide
- Ponatinib
- Posaconazole
- Pracinostat
- Prasugrel
- Praziquantel
- Prazosin
- Prednisolone
- Prednisone
- Pregabalin
- PREGNANEDIOL
- Pridinol
- Prochlorperazine
- Proguanil
- Promestriene
- Promethazine
- Promethazine Hydrochloride
- Propofol
- Propranolol
- Prothioconazole
- Prucalopride
- Pyridostigmine
- Pyridoxine