Lipitor 20mg can be taken as a half tablet. Lipitor’s main component, atorvastatin calcium tablets, is an imported dosage that can inhibit cholesterol synthesis, lower LDL cholesterol, and treat dyslipidemia. 20mg is the commonly used dosage, but some patients can consider Lipitor to reduce the dosage to a half tablet after taking it, if their blood lipids can reach the standard or even have been lower than the target range. Some patients who experience physical discomfort after taking Lipitor, such as muscle pain and weakness, and cannot tolerate it, can also use 10mg of Lipitor or even use 1/4 tablet. If a patient with hyperlipidemia cannot achieve satisfactory control of blood lipids by taking Lipitor half tablets, a combination of drugs that inhibit cholesterol absorption can also be used to control hyperlipidemia. The dose of Lipitor is very individualized and requires communication between the doctor and the patient to select an individualized dose to ensure safety and effectiveness.