Atorvastatin Calcium Tablets can be taken 4 tablets at a time. The drug is available in various sizes such as 10mg, 20mg, 40mg and the commonly used starting dose is 10mg once daily and its maximum dose is 80mg once daily. If you take the drug in the size of 10mg or 20mg, you can take 4 tablets at a time. So the drug can be taken 4 tablets at a time. The drug is a 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitor, which not only reduces the levels of very low-density lipoprotein (LDL) cholesterol and triglycerides, but also increases the levels of high-density lipoprotein (HDL) cholesterol and apolipoprotein A-1. Therefore, the drug is clinically used for the treatment of hypercholesterolemia and coronary heart disease. There are adverse reactions such as nausea, diarrhea and arthralgia during the use of the drug. It is contraindicated for those who are allergic to any of the components of the product, those with active liver disease, pregnant and lactating women. Before treatment with the drug, liver enzyme tests should be performed in the hospital and repeated thereafter according to clinical indications. If medication is required, it should be used under the guidance of a specialist, and should not be used on its own to avoid adverse reactions.