Tadacip 20 is used to treat erectile dysfunction or impotence in men. Tadalafil in this medicine works by increasing the amount of blood in the penile area in men. So that one can easily get an erection and maintain it for long time. Take this medication half an hour before engaging in sexual activity. This medicine is taken orally. The effectiveness of this medicine will last for 4-5 hours. Women should not use this medicine. By using this medicine you will be able to enjoy sex for more time.