Cenforce 130 mg is a prescription oral medication used to treat erectile dysfunction (ED) in adult men. It contains sildenafil citrate (130 mg), a PDE5 inhibitor that helps increase blood flow to the penis when you are sexually stimulated, supporting stronger and longer-lasting erections. Sildenafil blocks the enzyme phosphodiesterase type 5 (PDE5). This increases levels of cyclic-GMP (cGMP), which relaxes smooth muscles and improves blood flow in the penile tissues — enabling an erection during sexual arousal. Effects typically begin 30–60 minutes after taking the tablet and can last about 4–6 hours.