Elderly people with high blood cholesterol or cardiovascular disease can take Rosuvastatin for a long time. Rosuvastatin is a lipid-lowering drug that can lower blood cholesterol levels. Elevated total cholesterol is a risk factor for coronary heart disease. Lowering the plasma level of total cholesterol can reduce the morbidity and mortality of coronary heart disease and cerebrovascular disease. The drug blocks cholesterol synthesis by producing an inhibitory effect on HMG-CoA reductase. Rosuvastatin is used for hyperlipoproteinemia and prevention of cardiovascular and cerebrovascular diseases. It stabilizes atheromatous plaques in blood vessels or makes them smaller, reducing the occurrence of ischemic stroke, myocardial infarction and so on. Adverse reactions to Rosuvastatin are rare and mild, and patients may occasionally experience gastrointestinal reactions, skin flushing, headache and insomnia when applying large doses. It is contraindicated for those who are allergic to this drug and pregnant women. If the elderly people have adverse reactions such as skin flushing, headache and insomnia while taking Rosuvastatin, they should go to the hospital in time for treatment under the guidance of the doctor.