Vardenafil

Purity: ≥99.8%

Characteristics: White or off-white crystal powder, odorless, bitter, melt in water and ethanol

Functions: Vardenafil is a PDE5 inhibitor used for treating impotence that is sold under the trade name Levitra. As with all PDE5 inhibitors, should not be used by men taking nitrate medications, because combining them with vardenafil might provoke potentially life-threatening hypotension . The half-life is 4-5 hours.