Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood by inhibiting HMG-CoA reductase, an enzyme that plays a crucial role in the production of cholesterol in the body [1]. However, the relationship between Lipitor and lipid protein absorption is not directly linked, as Lipitor's primary mechanism of action is not centered around lipid protein absorption.

Lipitor works by reducing the amount of cholesterol produced by the liver, which in turn increases the liver's ability to remove low-density lipoprotein (LDL) or "bad" cholesterol from the blood [1]. This process helps to decrease the risk of heart attack and stroke [1].

While Lipitor does not directly influence lipid protein absorption, it can impact the absorption of other medications and nutrients. For instance, Lipitor can reduce the absorption of the cholesterol-lowering drug, ezetimibe, when the two are taken together [2].

In summary, Lipitor's primary function is to inhibit HMG-CoA reductase, thereby reducing cholesterol production and increasing LDL removal from the blood. Lipitor does not directly influence lipid protein absorption, but it can impact the absorption of other medications and nutrients.

Sources:
[1] "Atorvastatin." National Library of Medicine, <https://medlineplus.gov/druginfo/meds/a601243.html>.
[2] "Atorvastatin and ezetimibe." DrugPatentWatch, <https://www.drugpatentwatch.com/drugs/atorvastatin-and-ezetimibe>.