Cenforce 130mg is one of the brands that manufacture sildenafil citrate, which is the same active ingredient found in Viagra. Sildenafil is an FDA-approved medication primarily used for the treatment of erectile dysfunction (ED) in men. Its main mechanism of action is to increase blood flow to the penis, thereby helping men achieve and maintain an erection in response to physcial stimulation. Sildenafil has been shown to be effective for erectile dysfunction in many clinical studies. However, the efficacy may differ from one individual to the next. Some men may find that Cenforce 130 is too strong and may experience side effects, while others might find it just right.