Lipitor, also known as atorvastatin, is a medication used to treat high cholesterol levels. It is classified as a pregnancy category X drug, which means that it is contraindicated for use during pregnancy as it can cause harm to the developing fetus [1]. The FDA has issued a warning that atorvastatin should not be used during pregnancy as it can cause fetal harm, including fetal death or congenital anomalies [2].

According to the drug label, animal studies have shown that atorvastatin can cause fetal harm when administered to pregnant animals. There are no adequate and well-controlled studies in pregnant women, and the drug should only be used during pregnancy if the potential benefit justifies the potential risk to the fetus [3].

In addition, the drug label advises that women of childbearing potential should use effective contraception while taking atorvastatin, and that breastfeeding should be avoided while taking the medication [3].

In summary, Lipitor should not be used during pregnancy as it can cause harm to the developing fetus. Women of childbearing potential should use effective contraception while taking the medication, and breastfeeding should be avoided. It is important to consult with a healthcare provider before taking any medication during pregnancy or while breastfeeding.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.fda.gov/media/150774/download
[3] https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/020702s057lbl.pdf