Cenforce D is a medication commonly used to treat erectile dysfunction (ED) and premature ejaculation (PE) in men. It combines two active ingredients: sildenafil citrate and dapoxetine. Sildenafil is used to treat ED by enhancing blood flow to the penis, while dapoxetine is a selective serotonin reuptake inhibitor (SSRI) that helps delay ejaculation, making it effective for men with PE. Sildenafil citrate, the main active ingredient in Cenforce D, works by inhibiting the enzyme phosphodiesterase type 5 (PDE5). This leads to the relaxation of blood vessels in the penis, improving blood flow and enabling an erection when sexually aroused.