Lipitor (atorvastatin) is a prescription medication used to lower cholesterol levels and reduce the risk of heart attack and stroke. According to the drug's official website [2], Lipitor is not recommended for pregnant women and women who are breastfeeding. The website advises women to inform their healthcare provider if they are pregnant or planning to become pregnant while taking Lipitor.

Lipitor is classified as a pregnancy category X drug, which means that it has been shown to cause fetal abnormalities and should not be used during pregnancy [3]. In animal studies, Lipitor has been shown to cause birth defects and other problems in offspring when given to pregnant animals [3].

According to MedlinePlus [3], women who are pregnant or may become pregnant should not take Lipitor. If a woman becomes pregnant while taking Lipitor, she should stop taking the medication and contact her healthcare provider immediately. It is not known if Lipitor is excreted in breast milk, so women who are breastfeeding should also avoid taking the medication [3].

In conclusion, Lipitor is not recommended for use during pregnancy or breastfeeding, as it has been shown to cause fetal abnormalities and other problems in offspring. Women who are pregnant or planning to become pregnant should inform their healthcare provider if they are taking Lipitor or planning to take it. If a woman becomes pregnant while taking Lipitor, she should stop taking the medication and contact her healthcare provider immediately.

Sources:
[2] https://www.lipitor.com/
[3] https://medlineplus.gov/druginfo/meds/a600045.html