Rosuvastatin Calcium is usually taken for 4 to 8 weeks. Rosuvastatin Calcium is a lipid-regulating drug used for patients with primary hypercholesterolemia, mixed dyslipidemia, and pure familial hypercholesterolemia that are not well controlled by diet or other medications. Most patients will experience some decrease in blood lipids 4 to 8 weeks after use of the drug, but the utilization of the drug varies from patient to patient, and the exact time still depends on the patient’s own control. The drug may have adverse reactions such as headache, dizziness, nausea, abdominal pain, constipation, myalgia, weakness, etc. Occasionally, allergic reactions such as skin itching, rash and urticaria are seen. Allergic to the drug is prohibited, active liver disease, severe renal impairment, myopathy and other patients, pregnant and lactating women are prohibited. Specific medication needs to be used under the guidance of a doctor, regular review of blood lipids in the hospital to monitor the control of blood lipids.