Tadalista 40 is used to treat sexual problems in men. The main ingredient in this medicine is tadalafil. This tadalafil works to increase blood flow to the penis by relaxing male muscle cells. You should inform your doctor before taking this medicine if you are suffering from any disease like heart attack / stroke. This drug is not for children and women under 18 years of age. This medicine should be taken only once in 24 hours. This medicine should not be chewed, broken or crushed.