Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood. The drug works by inhibiting an enzyme called HMG-CoA reductase, which is involved in the production of cholesterol in the liver [2].

There is no evidence to suggest that Lipitor inhibits protein absorption. The drug's mechanism of action is specific to cholesterol production and does not affect protein metabolism. In fact, some studies have shown that atorvastatin may have beneficial effects on muscle protein synthesis [3].

It is important to note that while Lipitor is generally considered safe and effective, it can cause side effects in some individuals. Common side effects include muscle pain and weakness, which may be related to changes in muscle metabolism [2].

In conclusion, Lipitor does not inhibit protein absorption. The drug's mechanism of action is specific to cholesterol production and does not affect protein metabolism. However, Lipitor can cause side effects related to changes in muscle metabolism. As with any medication, it is important to talk to a healthcare provider about the risks and benefits of using Lipitor.

Sources:
[2] https://www.ncbi.nlm.nih.gov/books/NBK430779/
[3] https://pubmed.ncbi.nlm.nih.gov/14531725/