Vidalista pill which contains tadalafil, is a drug used to treat erectile dysfunction. Erectile dysfunction is characterized as a condition that indicates failure to obtain or maintain an erection. During sex, this feeling maintains the erection. Also, the latter can be used to treat ED. Tadalafil relaxes the veins in the lungs and clears the way for a more direct flow of blood. While Vidalista cannot cure erectile dysfunction, it can make intercourse more comfortable and less unpleasant.