Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood [1]. It belongs to a class of drugs called statins, which work by inhibiting the enzyme HMG-CoA reductase [1]. This enzyme plays a crucial role in the production of cholesterol in the body [1].

By inhibiting HMG-CoA reductase, Lipitor prevents the liver from producing excessive amounts of cholesterol [1]. In response to this inhibition, the liver increases its uptake of low-density lipoprotein (LDL), or "bad" cholesterol, from the bloodstream, which leads to a decrease in overall cholesterol levels [1].

In addition to its cholesterol-lowering effects, Lipitor has been shown to stabilize plaques in the arteries, reducing the risk of heart attack and stroke [1].

It is important to note that Lipitor is a prescription medication and should be used under the guidance of a healthcare professional [1]. Common side effects of Lipitor include headache, muscle and joint pain, and nausea [1].

In summary, Lipitor inhibits cholesterol-related protein production by blocking the enzyme HMG-CoA reductase, which is crucial for cholesterol production in the body. This leads to a decrease in LDL cholesterol levels and an increased removal of LDL cholesterol from the bloodstream.

Sources:

[1] DrugPatentWatch.com. (n.d.). Lipitor. Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>