Atorvastatin does not usually cause tachycardia. It should be used in accordance with medical advice. Atorvastatin is a hydroxymethylglutaryl coenzyme A reductase inhibitor and should be taken correctly between doses to avoid omission or overdose. Evaluation by a physician prior to and during administration of the drug is necessary to monitor the occurrence of serious adverse reactions. Common adverse reactions are muscle and hepatic adverse reactions. Atorvastatin may cause muscle adverse reactions, which can be categorized into 3 conditions according to the severity, in order of myalgia, myositis, and rhabdomyolysis; myalgia is manifested only as muscle pain, muscle tenderness, and muscle weakness. Rhabdomyolysis is the most serious one and can even be life-threatening. Secondly, it may cause hepatic adverse reactions, mainly in the form of elevated aminotransferases (ALT and/or AST) in a dose-dependent manner, and liver function is regularly monitored during the administration of the drug, in addition to mild adverse reactions such as headache, insomnia, abdominal pain, nausea, etc., which may also be seen after the administration of the drug. The use of the drug needs to be rationally applied under the guidance of a doctor, and if there are any uncomfortable symptoms, please consult a doctor in time.