More Cenforce tablets are used when men are suffering from a serious problem like impotence. Sildenafil acts as the active ingredient in the Cenforce drug. Cenforce tablets are mainly taken 1 hour before intercourse, after which the effect lasts for 4-5 hours. Taking Cenforce can make you feel better about sex. Consult a doctor before taking Cenforce. Cenforce is also found in different powers, allowing you to enjoy sex better.