Lipitor (atorvastatin) is a medication that is used to lower cholesterol levels in the blood. However, there is limited information available on the risks of taking Lipitor while breastfeeding. According to the FDA, the drug should not be used during breastfeeding unless the potential benefits outweigh the potential risks to the infant [2]. The drug is classified as a Pregnancy Category X drug, which means that it is contraindicated during pregnancy because it may cause harm to the fetus [2]. While there is limited information on the effects of Lipitor on breastfed infants, it is known that statins can pass into breast milk and may cause harm to the infant [3]. Therefore, it is recommended that women who are breastfeeding should not take Lipitor unless it is absolutely necessary and under the guidance of a healthcare provider [2].

Sources:
[2] FDA. (2019). Lipitor (atorvastatin calcium) tablets. Retrieved from https://www.fda.gov/media/150774/download
[3] National Library of Medicine. (2019). Atorvastatin. Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK501361/
[1] Drug Patent Watch. (n.d.). Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR