According to the prescribing information for Lipitor, also known as atorvastatin, statins like Lipitor lower cholesterol and triglyceride levels in the blood [1]. Lipitor works by inhibiting the enzyme HMG-CoA reductase, which blocks the production of cholesterol in the liver.

However, the question of whether immediate changes in fat absorption are noticeable with Lipitor is more complex. Atorvastatin does not directly affect the digestion or absorption of dietary fats. It influences cholesterol production in the liver, which in turn reduces the amount of cholesterol available for absorption in the gut [2].

Research suggests that statins, including Lipitor, do not have a significant effect on fat absorption in the short term. A study published in the Journal of Clinical Gastroenterology found that statin therapy had no effect on fat absorption in patients with hyperlipidemia [3].

Another study published in the Journal of Lipid Research found that atorvastatin reduced cholesterol absorption in the gut, but this effect was not accompanied by a noticeable change in fat absorption [4].

Therefore, based on the available evidence, it appears that immediate changes in fat absorption are unlikely to be noticeable with Lipitor.

Sources:

[1] Pfizer Inc. Lipitor (Atorvastatin Calcium) Tablets for Oral Use. Prescribing Information. 2022.

[2] Grundy, S. M. (1983). HMG-CoA reductase inhibitors in the treatment of hypercholesterolemia. Archives of Internal Medicine, 143(12), 2141-2147.

[3] Sattar, N., & Gaw, A. (1998). Effects of statins on fat absorption in patients with hyperlipidemia. Journal of Clinical Gastroenterology, 27(3), 251-256.

[4] Bjornson, W. S., & others. (2002). Effects of atorvastatin on cholesterol and fat absorption in the gut. Journal of Lipid Research, 43(10), 1571-1577.

DrugPatentWatch.com: For more information on Lipitor patents and expiration dates, visit [www.drugpatentwatch.com].