Lipitor is a medication used to lower cholesterol levels in the body. According to the drug patent watch website [1], Lipitor contains atorvastatin calcium as its active ingredient. Atorvastatin works by blocking the enzyme that produces cholesterol in the liver, which helps to reduce the amount of cholesterol in the blood.

The time it takes for Lipitor to lower cholesterol levels varies from person to person and depends on various factors such as the dosage, the severity of the cholesterol level, and the individual's response to the medication. According to the American Heart Association [2], patients should have their cholesterol levels checked six weeks after starting Lipitor. If the cholesterol levels have not decreased to the desired level, the dosage may be increased or other medications may be added.

It is important to note that Lipitor is not a quick fix for high cholesterol levels. According to WebMD [3], it may take several weeks or even months for the medication to show significant results. Additionally, Lipitor should be taken regularly as prescribed by a doctor, even if the patient feels fine. Stopping the medication without a doctor's approval can cause cholesterol levels to rise again.

In conclusion, the time it takes for Lipitor to lower cholesterol levels varies from person to person. Patients should have their cholesterol levels checked six weeks after starting Lipitor, and it may take several weeks or months for the medication to show significant results. It is important to take Lipitor regularly as prescribed by a doctor to achieve and maintain healthy cholesterol levels.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ahajournals.org/doi/full/10.1161/01.atv.15.5.678
[3] https://www.webmd.com/cholesterol-management/features/when-your-doctor-orders-cholesterol-lowering-medications