Vidalista black 80mg is an erectile dysfunction treatment for males. Vidalista Black 80 medication activates tadalafil by increasing the velocity of blood in the penis. During intercourse, this drug prolongs erection. This medicine's effect can persist for 4 to 6 hours. Women and children should not take this prescription because it has a negative side effects if they do. This medicine should be taken according to the doctor's instructions.