Usage: A selective phsphodiesterase type 5 (PDE5) inhibitor; Pharmaceutical raw material; Indicated for the treatment of erectile dysfunction(DE). Vardenafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). In combination with sexual stimulation, vardenafil works by increasing blood flow to the penis to help a man get and keep an erection. Vardenafil, as with all PDE5 inhibitors, …