Lipitor, or atorvastatin calcium tablets, is a lipid-lowering drug used to treat hypercholesterolemia and coronary heart disease. Generally not used in the treatment of posterior circulation ischemia, patients with posterior circulation ischemia can take anticoagulant, antiplatelet aggregation drugs, antihypertensive drugs, hypolipidemic drugs, hypoglycemic drugs and so on according to the specific situation. 1. Anticoagulant and antiplatelet aggregation drugs: commonly used drugs are aspirin tablets, clopidogrel bisulfate tablets and other drugs, which are beneficial to the prevention of thrombosis, and can help to alleviate dizziness, headache and other symptoms caused by posterior circulation ischemia. 2. Antihypertensive drugs: suitable for patients with hypertension, commonly used drugs include captopril tablets, hydrochlorothiazide tablets and so on. At the same time, attention should be paid to reduce the patient’s blood pressure to a reasonable range, usually the target blood pressure is 120/80mmHg. 3. Lipid-lowering drugs: applicable to patients with combined hyperlipidemia, commonly used drugs are simvastatin tablets, lovastatin tablets and so on. Lipids should be lowered to a reasonable level of risk stratification. If the patient’s rating is very high risk, LDL cholesterol should be lowered to below 1.8 mmol/L. 4. Antihyperglycemic drugs: For patients with combined diabetes, commonly used drugs include glibenclamide tablets, glipizide tablets, metformin hydrochloride tablets and so on. Patients with posterior circulation ischemia should consult a doctor in time to clarify the cause of the disease and treat the cause.