Vidalista 40mg is used to treat erectile dysfunction (ED) in men. In this condition, the patient is unable to achieve an erection sufficient for satisfactory sexual intercourse. Doctors worldwide recommend it and consider it one of the safest and most effective medications for treating ED. Tadalafil, present in Vidalista, acts on the blood vessels in various parts of the body. Its action involves blocking the enzyme phosphodiesterase type 5 (PDE5), thus preventing the breakdown of cGMP. This leads to the relaxation of blood vessels.