The active component of cenforce 50 mg is sildenafil. These medications are typically the most effective for treating erectile dysfunction. it takes five to six hours to take action. Take this sildenafil on an empty stomach to get the full effects of the medication as a fatty meal will lessen its potency. It is necessary to see a doctor before using cenforce 50 mg. One uses cenforce 50 mg per day. Use this once daily for men.