Vigora 100 is used to treat erectile dysfunction in men. These tablets contain Sildenafil as the active ingredient. Which helps in increasing the blood flow in the blood vessels. This medicine should be used one hour before sexual intercourse. So a strong erection can be easily obtained. The effect of Vigora 100 tablets is observed for 4 to 5 hours. These tablets are taken in different doses. Vigora 100 tablets are taken 30 minutes before sexual intercourse.