Vidalista 40 is the uppermost concentration drug of tadalafil. It is standard vidalista(tadalafil) if it can cause an erection that can last up to 36 hours. It also works profligate and can cause a production within an hour. Swallow the vidalista 40mg with a glass of water. Vidalista 40Mg is an FDA-approved pill used to treat erectile dysfunction difficulties in men.