Tadalis Sx 20 MG Tablet is a medicine used for the treatment of erectile dysfunction (a condition that occurs when a man has difficulty in getting and/or keeping an erection firm enough for sexual intercourse). It is also used to treat urinary symptoms caused due to an enlargement of the prostate gland (a walnut-sized gland located just below the bladder that secretes fluid to nourish and transport the sperm) in older men.