P-aminobenzoic Acid - Pyt
- P-aminobenzoic Acid - Paraformaldehyde
- Paramethasone - Pemoline
- Penbutolol - Pfa
- Pfc - Phenytoine
- Phg - Piperazine
- Piperazine (usp) - Potassium Chloride
- Potassium Chloride ( - Procaine
- Procaine Hydrochlori - Protocatechuic Acid
- Protonix - Pyrbuterol
- Pyrethia - Pyt