<p>Cenforce is a brand of sildenafil citrate, which is a medication primarily used to treat erectile dysfunction (ED), but also sometimes used for pulmonary arterial hypertension.</p><p><br />Sildenafil is the active ingredient in Viagra, one of the most well-known medications for ED. It works by inhibiting an enzyme called phosphodiesterase type 5 (PDE5), which in turn allows for the expansion of blood vessels and increased blood flow to the penis, enabling an erection in response to sexual stimulation.</p><p> </p>