Cenforce 50 mg is used to treat sexual dysfunction problems in men like impotence or erectile dysfunction (ED). It is one of the lower doses usually prescribed for people in the initial stages of ED. Sildenafil citrate is its active ingredient which is a commonly known Phosphodiesterase 5 Enzyme (PDE-5) inhibitor. Coupled with sexual stimulation, the drug helps you attain a firm erection which is essential for satisfactory sexual performance. You have to take it about half an hour before having sex to get good results.