Lipitor is a medication used to treat high cholesterol levels in the body. The active ingredient in Lipitor is atorvastatin calcium, which works by blocking an enzyme that is necessary for the production of cholesterol in the liver. While Lipitor is generally considered safe for use in adults, it is not recommended for use during pregnancy.

According to the FDA, Lipitor is classified as a pregnancy category X drug, which means that it has been shown to cause harm to the fetus in animal studies and that there is evidence of fetal risk in humans. Lipitor should not be used during pregnancy, and women who are planning to become pregnant should stop taking the medication and use alternative treatments to manage their cholesterol levels.

The risks associated with Lipitor use during pregnancy include fetal malformations, developmental delays, and other adverse effects. Lipitor can also pass into breast milk and may harm a nursing infant, so women who are breastfeeding should also avoid taking the medication.

In conclusion, Lipitor should not be used during pregnancy or while breastfeeding due to the potential harm it can cause to the fetus or nursing infant. Women who are planning to become pregnant should talk to their healthcare provider about alternative treatments for managing high cholesterol levels.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://medlineplus.gov/druginfo/meds/a600045.html
[3] https://www.fda.gov/media/150774/download