Vidalista 40 pill is used to treat impotence in men. The drug contains tadalafil, which circulates blood to the penis and relaxes the muscles. This drug should only be used by men over 18 years of age. This medicine helps to improve your sex life. This drug should be used 1 hour before sexual activity. This medicine should be used only on the advice of a doctor. The effect of this drug is seen in 30-40 minutes depending on the person.