Description
What is Vardenafil?
Vardenafil (Levitra — high-selectivity PDE5 inhibitor) is a Small molecule C₂₃H₃₂N₆O₄S·HCl, MW 579.1. Potent PDE5 inhibitor with higher selectivity for PDE5 over PDE6 (colour vision interference) compared to sildenafil. Prevents cGMP degradation in vascular smooth muscle via NO pathway. Short half-life (~4–5hr). Hepatically metabolised (CYP3A4 — relevant for drug interaction research).
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