Vitamin B12
Vitamin B12 Mechanism of Action Vitamin B12 (cobalamin) is an essential cofactor for two critical enzymatic reactions in humans: Methionine synthase (MTR): Transfers a methyl group from 5‑methyltetrahydrofolate to homocysteine,…
Vistaril
Vistaril --- Mechanism of Action Hydroxyzine, the active ingredient in Vistaril, is a first‑generation H1‑histamine receptor antagonist with significant anticholinergic properties. H1 Blockade: Prevents histamine binding → ↓ CNS arousal,…
Vimpat
Vimpat Vimpat (lacosamide) is an antiepileptic drug (AED) that selectively stabilizes inactivated voltage‑gated sodium channels, providing targeted seizure control with a favorable safety profile. Mechanism of Action Selective Stabilization of…
Vilazodone
Vilazodone Vilazodone (brand name Viibryd™) is a selective serotonin reuptake inhibitor (SSRI) with added partial agonist activity at the serotonin‑1A (5‑HT₁A) receptor, approved for the treatment of major depressive disorder…
Viibryd
Viibryd Viibryd (vilazodone) is a novel, serotonin‑selective reuptake inhibitor and partial agonist of the 5‑HT1A receptor, approved for the treatment of major depressive disorder (MDD) in adults. --- Mechanism of…
Victoza
Victoza Victoza (liraglutide) is a once‑daily glucagon‑like peptide‑1 (GLP‑1) receptor agonist approved for type 2 diabetes mellitus (T2DM). It improves glycemic control, promotes weight loss, and carries modest cardiovascular benefits. Mechanism…
Vicodin
Vicodin Vicodin is a fixed‑dose combination analgesic containing 5 mg of hydrocodone (an opioid μ‑agonist) and 300 mg of acetaminophen (a non‑opioid analgesic). It is widely used for moderate‑to‑severe acute pain management,…
Vibramycin
Vibramycin Vibramycin (generic: tetracycline) is a broad‑spectrum tetracycline antibiotic used to treat a variety of bacterial infections. Mechanism of Action Binds 30S ribosomal subunit of susceptible bacteria, blocking attachment of…
Vibegron
Vibegron Vibegron (brand names: GEMBIL in the U.S. and VIBEGRON elsewhere) is a selective, oral β3-adrenergic receptor agonist approved for the management of overactive bladder (OAB) with urgency, urge urinary…
Viagra
Viagra Viagra (generic name sildenafil citrate) is the first‑approved phosphodiesterase‑5 (PDE5) inhibitor indicated for men with erectile dysfunction (ED). Its pharmacology is fundamental to understanding its therapeutic use, safety profile,…