Most of the men are troubled by the problem of impotence in their life. Due to this problem they cannot maintain an erection. To get rid of this problem they should use Vidalista 40 . This drug increases blood flow to the scalp in men. Vidalista 40 contains tadalafil as an active ingredient. This medicine is taken before sexual activity. This medicine is taken in different doses. It is important to consult a doctor before taking this medicine.