The men who are suffering from erectile dysfunction should take Cenforce 100 Mg or Cenforce 150 mg tablets orally with a full glass of water before 40-50 minutes of intimacy. The active ingredient sildenafil citrate helps to increase cGMP level into the body and become a cause of blood flow in the penis which helps to patient to get a hard erection for a long time. The Cenforce 100 is effective for around 4-5 hours which is similar to viagra.Before use Cenforce 100 or Cenforce 200 take proper suggestion of Doctor.