Whether it is okay to take half a tablet of statin a day should follow the doctor’s advice and choose the right dose under the doctor’s guidance. There are several varieties of statins, such as atorvastatin, resuvastatin, etc., mainly used in the treatment of hypercholesterolemia, each drug has a minimum therapeutic dose, it is not clear whether half a tablet of statin orally achieves an effective dose, and the appropriate dose should be selected according to the physician’s guidance. Adverse effects of statins include nausea, vomiting, muscle pain, arthralgia, elevated liver enzymes, etc. Allergy to drug components, unexplained elevation of liver enzymes are patients, and patients with severe hepatic impairment are prohibited. Patients taking oral statin drugs should choose the appropriate dose under the guidance of a physician and avoid purchasing drugs on their own.