You might only be able to get an erection with this Cenforce D medicine if you are feeling particularly ecstatic. Only if you have erectile dysfunction should you use this medication. The recommended dosage for this medication is one dose per day. Try sildenafil if you're having problems with male sexual function (also known as erectile dysfunction or impotence). Sildenafil also helps men achieve and sustain an erection during sexual stimulation by improving blood flow to the penis.