Sildenafil acts as the active ingredient in the Cenforce drug, the Cenforce drug is taken 1 hour before intercourse, after which the effect lasts for 4-5 hours, after the Cenforce drug, men can enjoy sex better, Cenforce a Consult a doctor before taking. Cenforce should be kept away from small children and pets, Cenforce should not be used by people under 18 years of age.