Tadalista CT 20 mg is a medication used to treat erectile dysfunction (ED) in men. It contains Tadalafil, which belongs to a group of medicines called PDE5 inhibitors. This drug helps relax the blood vessels in the penis, improving blood flow and making it easier to get and keep an erection. An erection happens when blood flows into the penis due to the widening of blood vessels. At the same time, the veins that carry blood away from the penis narrow, helping maintain the erection. This medicine only works when you are sexually stimulated. It will not cause an erection without arousal.