If you are also suffering from a serious problem of impotence in your life and are looking for a cure for this problem then you should use Vigora 100mg.which contains sildenafil as active ingredient which will help men in their sex life for a long time. Helps to get erection. You should take this medicine 30 minutes before sexual intercourse. The effect of this medicine lasts for 4-5 hours, so it is important to consult your doctor while taking this medicine.