There are several types of medications used to treat ED. Each drug works differently, but it all improves sexual activity by stimulating blood flow to the penis. Vidalista CT 20 medicine is an effective medicine used to treat impotence in men. Tadalafil present in this drug works by increasing the amount of blood in the arteries of the penis. It is recommended that you take this medicine 1 hour before intercourse. Using this drug improves your sex life.