Tadacip 20 mg is used to treat erectile dysfunction, impotence, and inability to get or keep an erection in men. This medicine contains an ingredient called tadalafil which helps in increasing blood flow to the penile tissues of men. This helps men to know a strong erection during intercourse. You can also take this medicine before or after a meal. Take this medicine with water but do not break or chew the medicine. Do not consume alcoholic beverages or fatty foods with this drug. Take this medicine as advised by your doctor. The effect of this drug lasts for 4 to 6 hours.