Polyethylene glycol 3350
Polyethylene Glycol 3350 Mechanism of Action Polyethylene glycol 3350 (PEG‑3350) is a non‑absorbable, high‑molecular‑weight polymer that functions as an osmotic laxative. PEG draws water from the intestinal lumen by osmotic…
Plavix
Plavix Plavix (clopidogrel bisulfate) is a thienopyridine antiplatelet agent that irreversibly inhibits platelet ADP‑receptor activity, thereby preventing thrombus formation in atherosclerotic disease. Mechanism of Action Irreversible inhibition of the P2Y12…
Plaquenil
Plaquenil Plaquenil (hydroxychloroquine sulfate) is an antimalarial and immunomodulatory agent widely used in rheumatology, dermatology, and infectious disease. Mechanism of Action Plaquenil primarily exerts its effects through immunomodulation and lysosomal…
Plan B
Plan B Plan B is a widely used emergency contraceptive that contains the synthetic progestin levonorgestrel. It is available over‑the‑counter in many countries and is often recommended for use within 72 hours of…
Piperacillin and tazobactam
Piperacillin and Tazobactam Piperacillin/Tazobactam (Pip-Tazo) is an extended‑spectrum penicillin combined with a β‑lactamase inhibitor for broad coverage against Gram‑negative and select Gram‑positive bacteria, including Pseudomonas aeruginosa and anaerobes. --- Mechanism…
Pioglitazone
Pioglitazone Pioglitazone is a thiazolidinedione (TZD) antidiabetic agent that improves insulin sensitivity primarily by activating peroxisome‑proliferator‑activated receptor‑gamma (PPAR‑γ) heterodimers. Mechanism of Action PPAR‑γ agonist – binds nuclear receptor, alters gene…
Phexxi
Phexxi Phexxi (generic name estrone 3‑hexestanyl ester) is the first FDA‑approved selective estrogen receptor modulator (SERM) formulated to prevent estrogen‑driven breast cancer recurrence in early‑stage post‑menopausal women with hormone‑receptor‑positive disease.…
Phentermine
Phentermine Phentermine is a first‑generation sympathomimetic amine used primarily for short‑term management of obesity. It stimulates the central nervous system, elevating norepinephrine release and inhibition of appetite. Mechanism of Action…
Phenobarbital
Phenobarbital Mechanism of Action Phenobarbital is a barbiturate that potentiates γ‑aminobutyric acid (GABA) neurotransmission. GABA_A receptor agonism: Opens chloride channels → hyperpolarization of neuronal membranes. Inhibition of voltage‑dependent sodium channels:…
Phenergan
Phenergan Phenergan (generic name: promethazine) is a first‑generation histamine H1‑receptor antagonist widely used for its antihistaminic, antiemetic, antimuscarinic, and sedative properties. The drug is available in oral, intravenous, intramuscular, and…