Erectile dysfunction and other male sexual health problems can be treated with Vidalista 20 (ED). The inability to get and maintain a firm erection is a symptom of sexual dysfunction or ED in men. Tadalafil 20mg, the active ingredient in , controls the PDE5 enzyme in the penis, thereby increasing blood flow to the area. An erection is achieved when a man's penis receives more blood than usual. Erectile dysfunction is caused by blood not reaching the nerves in the penis.