In Vidalista 40mg, the main active ingredient is tadalafil, a PDE5 inhibitor. PDE5 inhibitor is indicated to treat s*xual function problems such as erectile dysfunction and impotence. Tadalafil is also indicated for the treatment of specific subtypes of pulmonary hypertension. Vidalista 40 relaxes the muscles and blood vessels, which helps increase blood flow to the p*nis to help a man get and maintain an erection and maintain s*xual arousal in men. It is also used to treat the symptoms of an enlarged prostate. It belongs to the PDE-5 depleting type of drug, which helps to suppress the signs of erectile dysfunction.