Cenforce Professional is marketed as a sildenafil citrate medicine for men with erectile dysfunction (ED). The manufacturer lists Cenforce Professional as a sublingual sildenafil product, with a commonly listed strength of 100 mg. Sildenafil is a PDE5 inhibitor. It supports erections by increasing blood flow to the penis when sexual stimulation occurs. It does not increase sexual desire and cannot produce an erection without sexual stimulation.