Whether simvastatin can take half a tablet needs to be decided after the doctor’s assessment of the patient’s condition, do not adjust the dose of the drug on your own. Simvastatin is a kind of statin lipid-lowering drug, which is mainly used for lipid-lowering treatment, but also used for the prevention and treatment of coronary heart disease, ischemic cerebrovascular disease and other diseases. The dose of simvastatin should be decided by the doctor after evaluating the condition. During the treatment period, blood lipids, liver and kidney functions and other test indicators should be rechecked regularly to determine whether the treatment dose and regimen need to be adjusted. Adverse reactions to simvastatin include nausea,, abdominal pain, rash, itching, and others. It is contraindicated for those who are allergic to the components of the drug, pregnant and lactating women. Simvastatin should be used properly under the guidance of a doctor, do not reduce or increase the dosage on your own, in order to avoid affecting the therapeutic effect or related adverse reactions.