Vidalista 40 is used to treat impotence in men. The drug contains an ingredient called Tadalafil which helps increase blood flow to the penile tissue in men so that men can enjoy sex longer. This drug is only for men over 18 years of age. Take this medicine one hour before intercourse. Do not take this medicine frequently as the effect of this medicine lasts for 6 hours. You can also take this medicine before or after a meal. Take this medicine as advised by your doctor.