Cenforce professional medicine is helpful in treating erectile dysfunction, pre-ejaculation and impotence in men. It contains sildenafil citrate as its active ingredient. This drug relaxes the blood vessels and helps increase blood flow to the muscles. So as to gain and maintain a strong erection during intercourse. The effect of this medicine lasts for 3 to 4 hours, which is enough for erection. So visit our store - cenforce.us