Tag Archives: pde5 inhibitor

General information about vardenafil

Vardenafil is the name of the active chemical ingredient contained in Levitra. Vardenafil along with sildenafil and tadalafil belong to a class of drugs known as PDE5 inhibitors. The first among the PDE5 inhibitor class was viagra, patented in 1996 and hitting the market in 1998. Levitra was the second product to be introduced and […]