Atorvastatin Calcium Tablets treat hypercholesterolemia and coronary heart disease. The drug reduces plasma cholesterol and serum lipoprotein concentrations by inhibiting hepatic reductase and cholesterol biosynthesis, and enhances the uptake and metabolism of LDL by increasing LDL receptors on the cell surface of the liver. Therefore, the drug is clinically used in the treatment of hypercholesterolemia and coronary heart disease. Adverse reactions such as nausea, diarrhea, arthralgia, and urinary tract infections are occasionally associated with the use of this drug. It is contraindicated for those who are allergic to any of the components in the product; for patients with active liver disease; for pregnant and lactating women. Patients should be carefully monitored for any signs and symptoms of muscle pain, muscle tenderness or muscle weakness during administration. If medication is needed, it should be used under the supervision of a physician, and should not be used on its own to avoid adverse reactions.