Tadacip 20mg is used to treat erectile dysfunction in men. This drug is beneficial for impotence. The medicine contains an ingredient called tadafil which helps to increase blood flow to the penis tissues of a man. Take this medicine one hour before intercourse. This medicine also has side effects so take this medicine once in 24 hours. You can also take this medicine before or after a meal. This drug should be taken only by men above 18 years of age. The effect of this drug lasts for 6 hours. Take this medicine as advised by your doctor.