Avanafil is a prescription Drugs to treat the inability to attain or maintain a penile erection in men. It not for use in women or children. Avanafil belongs to a class of drugs called phosphodiesterase inhibitors. Avanafil is a used for adult men who have Erectile Dysfunction (also known as impotence). This is when you cannot get, or keep a hard, erect penis suitable for sexual activity. First, keep this thing in your mind, Stendra only works if you are sexually aroused. avanafil dosage, avanafil price, avanafil review