vidalista black is used to treat sexual dysfunction in men. An element in this medication called tadalafil helps men relax the muscles in their penile tissue and get a powerful erection during sexual activity. This medication takes 36 hours to take effect. This medication can be used either before or after meals. Only guys who are at least eighteen years old may use this medication. As directed by your doctor, take this medication. Avoid taking this medication with fatty meals or alcoholic beverages.