By API Standards
- P7C3-A21
- Pachymic Acid
- Pacritinib
- Palbociclib
- Paliperidone
- Paracetamol
- Paromomycin
- Pazufloxacin
- Pemafibrate
- Pemigatinib
- Pentoxyfylline
- Perampanel
- Perindopril
- Perindoprilat
- Perphenazine
- Petundin
- Phenethyl
- Phenindione
- Pheniramine
- Phenobarbital
- Phenothiazine
- Phenoxazine
- Phenylephrine
- Phosphatidylcholine
- Phosphatidylserine
- PHPB
- Phytosterol
- Pimavanserine
- Pimecrolimus
- Pimobendan
- Pimozide
- Pimpinellin
- Pioglitazone
- Piperitone
- Pirfenidone
- Piribedil
- Piroxicam
- Pitavastatin
- Pitofenone
- Pomalidomide
- Ponatinib
- Posaconazole
- Potassium Clavulanate
- Pracinostat
- Prasugrel
- Pravastatin
- Praziquantel
- Prazosin
- Prednisolone
- Primidone
- Prochlorperazine
- Progesterone
- Proguanil
- Promestriene
- Promethazine
- Propisochlor
- Propranolol
- Prothioconazole
- Prucalopride
- Pyridostigmine