Sex Enhancement Raw Powder Series Vardenafil For Male Erectile Dysfunction Description: Vardenafil is a PDE5 inhibitor used for treating erectile dysfunction. Vardenafil’s indications and contra-indications are the same as with other PDE5 inhibitors. The difference between the vardenafil molecule and is a nitrogen atom’s position and the change of sildenafil’s piperazine ring methyl group to an ethyl group. Tadalafil is structurally different from …