Cenforce is one of the best ED pills. You can take this medication and solve erection issues. Cenforce is an oral medicine taken with water. It contains Sildenafil Citrate, a synthetic part similar to Viagra. PDE5 inhibitors inhibit the activity of a specific enzyme, cGMP-specific phosphodiesterase-5. PDE5 inhibitors increase blood flow to specific areas of the body, including the penis.