Males take Avanafil 200mg Tablets to treat impotence, often known as erectile dysfunction. A man may have erectile dysfunction if he is unable to get or keep an erection strong enough for the intended activity. Avana 100mg pill cures recurrent premature ejaculation and erectile dysfunction in men by relaxing the smooth muscles in blood vessel walls and boosting blood flow to the genitals. The benefits of the 200mg tablet often start to take effect 15 minutes after taking it and can extend for up to 4-5 hours. There is a small chance that using Avanafil 100mg will cause uncomfortable side effects like headaches, stuffy noses, and back pain.