Roseday A 20 Tablet is a prescription medicine that is used to decrease the amount of bad cholesterol (low-density lipoprotein (LDL)) and triglycerides in the blood. This medicine works by slowing down the synthesis of cholesterol in the body. This medicine helps by decreasing the amount of cholesterol that may build up on the walls of the arteries. Roseday A 20 Tablet is also used to raise the amounts of good cholesterol (high-density lipoprotein (HDL)) in the blood, to decrease the amount of cholesterol, fats, and other fatty substances in the blood in children with age of 10 to 17 years who have familial heterozygous hypercholesterolemia (an inherited condition in which cholesterol cannot be removed from the body), to treat a genetic condition characterized by increased levels of low-density lipoprotein cholesterol in adults (Homozygous Familial Hypercholesterolemia), to decrease the progression of the condition of the build-up of fats, fatty substances, and cholesterol in the arteries of the heart (atherosclerosis), and to reduce the risk of stroke, heart attack, and surgical procedures to restore necessary blood flow to the heart muscles.