Cenforce 50 can be used to treat impotence and weak erections in men. This drug is only for use by men who are eighteen years of age or older. The primary ingredient in this drug is sildenafil, which relaxes the muscles in men's penile tissue and increases blood flow to it. This drug aids in a firm erection in men during sexual activity. Take this drug 30 minutes before engaging in any sexual activity. You can take this medication with or without food. Adhere to your doctor's instructions when using this medication. It takes five hours for this drug to start working.