May also be referred to as: Sildenafil, Sildenafil Citrate
ViagraŽ is approved for the treatment of men who have difficulty achieving and maintaining an erection (impotence).
If the nerves or blood vessels associated with the process aren't working properly, a man may not be able to achieve an erection. ViagraŽ increases blood flow to the penis, so that when a man is sexually aroused, he can achieve and maintain an erection.
