Tadacip is taken for the problem of weak erection in men. This drug is very effective for impotence. This medicine contains an ingredient called Tadafil which helps in increasing the blood flow in the tissues of the male penis and relaxes the muscles. Take this medicine 30 minutes before intercourse. The effect of this drug lasts for 6 hours. Take this medicine as advised by your doctor. You can also take this medicine before or after a meal.