Erectile dysfunction and impotence problems cause men to not be able to have an erection with their partner for a long time. So such men should use Tadalista 20 pills. This medicine contains the active ingredient Tadalafil. This medicine helps men to have a hard and long erection with their partner. The effect of this medicine lasts for 36 hours. This medicine is taken in different doses. It is important to consult a doctor before taking this medicine.