When men suffer from erectile dysfunction and impotence problems, so you should use Cenforce 100 mg tablet. Which men get in getting a longer erection in their sex life? Cenforce tablets contain sildenafil which is similar to Viagra. The effect of this drug lasts for 24 hours. Whose effect lasts up to 36 hours? This medicine comes in different doses so you need to consult a doctor before taking this medicine.