Avanafil medicine that is used to treat erectile dysfunction. People buy Avanafil online so that they can improve their ED conditions.Erectile dysfunction is a condition in which a man's penis does not harden for sexual activity.This medicine help with erect.Because it quickly increases blood flow in the penis area. If you have any concerns before you start taking avanafil, you should talk to your doctor or get advice and not take any risks yourself. You should to take avanafil 15 or 30 minutes before sexual activity.but do not take it more than once everyday.