Lipitor is a brand name for atorvastatin, a medication used to lower cholesterol levels in the blood. According to the American Pregnancy Association [2], atorvastatin is classified as a pregnancy category X medication, which means that it is contraindicated during pregnancy as it can cause fetal harm. Animal studies have shown that atorvastatin can cause skeletal malformations, decreased fetal weight, and increased fetal mortality [2]. The medication is also known to pass through the placenta and enter the fetal bloodstream [2].

Pregnant women with familial hypercholesterolemia, a genetic condition that causes high cholesterol levels, may be at risk of complications during pregnancy and require cholesterol-lowering medications such as atorvastatin [3]. However, the use of atorvastatin during pregnancy should be avoided whenever possible. In cases where the medication is deemed necessary, close monitoring of the pregnancy and fetal development is required [3].

In conclusion, the use of Lipitor (atorvastatin) during pregnancy is contraindicated due to the potential for fetal harm. Pregnant women with familial hypercholesterolemia may require cholesterol-lowering medications, but the use of atorvastatin should be avoided whenever possible. Close monitoring of the pregnancy and fetal development is necessary in cases where the medication is deemed necessary [2][3].

Sources:
[2] https://americanpregnancy.org/healthy-pregnancy/medication/atorvastatin-during-pregnancy/
[3] https://utswmed.org/medblog/statins-pregnancy-familial-hypocholesteremia/
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR