Avanafil is a modern and effective drug which is used by men to eliminate the symptoms of erectile dysfunction. The main active ingredient of drug avanafil is a prototype of sildenafil contained in viagra. The active ingredient of the tablets belongs to the phosphodiesterase inhibitors, block this enzyme and promotes the release of nitric oxide during the occurrence of sexual arousal. As a result of these processes relax the walls of blood vessels, active blood arrives to the genitals is achieved by the natural and persistent erection. Avanafil is similar to the popular Viagra. The drug has the same properties as blue pill, successfully coping with erectile disorders of different severity, improves the quality of sex and returns to men confidence.