Its working method is completely scientifically approved, the ingredients are 100% natural and of herbal origin. The way Vigrx Plus works is that the ingredients not only increase blood flow to the penis area and produce an erection, but also maintain male sexual health which is manifested by increasing stamina in the sexual act. Please read the ingredients contained in the Vigrx Plus supplement on the link provided.
http://www.vigrxresult.com