The active ingredient in Tadarise 40mg tablets is Tadalafil which increases blood flow in the range and relaxes the blood vessels so this drug helps men to get a longer erection with their partner. The effect of this drug lasts for 4-5 hours. Therefore, men should take this medicine 30 minutes before sexual intercourse. You should not eat heavy food and should not consume alcohol while taking this medicine. It is necessary to consult your doctor while taking this medicine.