Kamagra is yet another drug, an exact copy of Viagra. But, despite the fact that in its composition the same active substance that the tool belongs to the same category of drugs to increase erectile function that has the same Viagra mechanism of action, production and sales Kamagra is held under its own brand. Kamagra effectively solves the problems of erectile dysfunction of any origin. Active ingredient is sildenafil. Sildenafil relaxes the smooth muscles of the cavernous bodies of the penis and arterioles. As a result, they dilate and allow blood to completely fill the enlarged cavity. At the same time increases blood circulation, activates the process of filling. You receive qualitative erection. But this happens only on the background of sexual stimulation, when there is sexual arousal.