MediHelp
Drug reference A–Z
Concise reference summaries for active ingredients: drug class, mechanism of action, common side effects and key warnings.
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
- pegfilgrastim
- peginterferon alfa 2a
- peginterferon alfa 2b
- peginterferon beta 1a
- pegloticase
- pembrolizumab
- pemetrexed
- penciclovir
- penicillamine
- penicillin g
- penicillin g procaine
- penicillin g procaine-penicillin g
- pentazocine
- pentosan
- pentoxifylline
- pentoxyverine
- peppermint oil
- perampanel
- perindopril
- permethrin
- perphenazine
- pertuzumab
- phenelzine
- pheniramine
- phenobarbitone
- phenothrin
- phenoxymethyl penicillin
- phentolamine
- phenylephrine
- phenytoin
- pilocarpine
- pimavanserin
- pimecrolimus
- pimozide
- pinaverium
- pioglitazone
- pipazethate
- piperacillin
- piperacillin-tazobactam
- piracetam
- pirbuterol (discontinued)
- pirfenidone
- piribedil
- piroxicam
- pitavastatin
- pizotifen
- pneumococcal vaccine 13-valent
- policresulen
- polycarbophil
- polyethylene glycol
- polyvinyl
- ponesimod
- posaconazole
- potassium citrate
- potassium citrate-citric acid
- potassium sodium hydrogen citrate
- povidone iodine
- pralatrexate
- pramipexole
- pravastatin
- praziquantel
- prazosin
- prednisolone
- prednisone
- pregabalin
- prilocaine
- primaquine
- primrose
- probenecid
- procarbazine
- prochlorperazine
- procyclidine
- progesterone
- promethazine
- propafenone
- propiverine
- propofol
- propranolol
- propylthiouracil
- prucalopride
- pseudoephedrine
- psyllium husk
- pumpkin seed oil
- pyrazinamide
- pyridostigmine
- pyrimethamine
- quetiapine
- quinagolid
- quinidine
- quinine
- rabeprazole
- rabies immune globulin
- racecadotril
- raloxifene
- raltegravir
- ramelteon
- ramipril
- ramucirumab
- ranitidine
- ranolazine
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