Cialis pill is a highly potent medication used for treating erectile dysfunction (ED) and impotence issues. It contains 20 mg, 10 mg, 5 mg, and 2.5 mg of Tadalafil, the active ingredient that helps in achieving and maintaining strong and lasting erections at end of the sexual intercourse. Cialis 20 mg is a doctor-prescribed medication to treat Erectile dysfunction (ED) or ineptitude. Besides, the drug is great for individuals who experience the ill effects of an erection issue under any circumstance. So before using this effective medication, first consult your doctor.