After reviewing the provided sources, there is no clear evidence linking Lipitor to poor protein absorption.

Lipitor is a medication used to lower cholesterol levels in the blood [1]. According to the drug label provided by the FDA, Lipitor is not known to affect protein absorption [3]. The label does mention that the medication may interact with certain drugs that affect the liver, which could potentially impact protein metabolism [3]. However, this is not a direct effect of Lipitor itself.

The National Center for Biotechnology Information (NCBI) book titled "Statins in General Practice: Pocketbook" also does not mention any link between Lipitor and poor protein absorption [2]. The book does mention potential side effects of Lipitor, including muscle pain and liver problems, but does not mention any impact on protein absorption [2].

In conclusion, based on the provided sources, there is no clear evidence linking Lipitor to poor protein absorption. However, as with any medication, it is important to discuss potential side effects and interactions with a healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/books/NBK430779/
[3] https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/020702s057lbl.pdf