Atorvastatin Calcium Tablet is a medication used to lower blood lipids, mainly used to lower total cholesterol, apolipoprotein B, triglyceride and LDL cholesterol levels. The main site of action of Atorvastatin Calcium is the liver, where it decreases cholesterol synthesis through hepatic metabolism, increases LDL receptor synthesis, decreases LDL cholesterol and blood cholesterol levels, increases blood HDL levels and moderately decreases serum triglyceride levels. The drug has common adverse reactions such as nausea, vomiting, headache, dizziness, rash, blurred vision and taste disturbances. Muscle adverse reactions such as myalgia, myositis and rhabdomyolysis can also occur. Liver function needs to be monitored during the medication period, and the drug can also cause hepatic adverse reactions such as elevation of blood aminotransferases. Abnormalities of erectile function and insomnia are also rare adverse reactions to the drug. While taking the drug, in the event of muscular adverse reactions such as muscle pain, tenderness and weakness with fever and generalized malaise, in the event of hepatic adverse symptoms such as yellowing of the skin and the whites of the eyes, darkening of the urine color, abdominal discomfort, poor appetite, and malaise, and in the event of acute allergic symptoms such as swelling of the face, lips, tongue, and throat, which predispose to breathing and swallowing difficulties, the drug needs to be discontinued and medical attention is required immediately. The drug is contraindicated in people who are allergic to the drug, patients with active liver disease, pregnant and lactating women. The drug is a prescription drug and needs to be used under the guidance of a professional physician to avoid blind use, which may cause adverse effects.