Cenforce tablet is an improved version of the popular drug viagra which is highly effective treatment for erectile dysfunction in males. Sildenafil citrate is the active ingredient of cenforce which is classified as phosphodiesterase inhibitor (PDE5). It improves blood flow to the penis, which resulting in complete erection. This medicine should be consumed at least 30 minutes before initiating intercourse in order to get full benefit. It is effective for 4 hours. Also, this medicine does not furnish any protection against disease like syphilis, HIV which can be transmitted through sexual contact.