Lipitor, the brand name for atorvastatin, is a medication used to lower cholesterol levels in the blood. According to the NHS, it usually takes around two to four weeks to see the effects of atorvastatin on cholesterol levels in the blood [2]. However, it may take up to four to six weeks for the full benefits of the medication to be seen [3]. The length of time it takes to see results may vary depending on individual factors such as age, weight, and overall health [3].

According to Drug Patent Watch, Lipitor was first approved by the FDA in 1996 [1]. Since then, it has become one of the most commonly prescribed cholesterol-lowering medications in the United States [3]. It works by blocking an enzyme in the liver that produces cholesterol, thereby reducing the amount of cholesterol in the blood [3].

It is important to note that Lipitor should be taken as directed by a healthcare professional. It is usually prescribed along with a healthy diet and exercise program to help lower cholesterol levels in the blood [2]. Some common side effects of Lipitor may include muscle pain, weakness, and tenderness [2]. In rare cases, Lipitor may cause more serious side effects such as liver problems and muscle damage [2].

In summary, it usually takes around two to four weeks to see the effects of Lipitor on cholesterol levels in the blood. However, it may take up to four to six weeks for the full benefits of the medication to be seen. Lipitor is a commonly prescribed cholesterol-lowering medication that works by blocking an enzyme in the liver that produces cholesterol. It is important to take Lipitor as directed by a healthcare professional and to be aware of potential side effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/medicines/atorvastatin/common-questions-about-atorvastatin/
[3] https://www.webmd.com/cholesterol-management/features/when-your-doctor-orders-cholesterol-lowering-medications