Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the body. According to the sources provided, there is limited information available on whether Lipitor can harm breastfed infants.

The drug patent watch website [1] states that there is no information available on the excretion of atorvastatin into human milk. However, it is known that other drugs in the same class as atorvastatin can pass into breast milk and potentially harm the nursing infant. Therefore, it is recommended that women taking Lipitor should not breastfeed.

The FDA [2] provides information on the use of Lipitor during pregnancy and lactation. The agency classifies Lipitor as a pregnancy category X drug, meaning that it is contraindicated in pregnancy because it can cause fetal harm. The FDA also recommends that women taking Lipitor should not breastfeed because of the potential for adverse effects on the nursing infant.

The National Center for Biotechnology Information [3] provides a summary of the available information on Lipitor and breastfeeding. The authors note that Lipitor is not recommended for use during breastfeeding because of the potential for adverse effects on the nursing infant. They recommend that women who need to take atorvastatin should consider alternative treatments that are safer for breastfeeding infants.

In conclusion, there is limited information available on whether Lipitor can harm breastfed infants. However, based on the available information, it is recommended that women taking Lipitor should not breastfeed because of the potential for adverse effects on the nursing infant. Women who need to take atorvastatin should consider alternative treatments that are safer for breastfeeding infants.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.fda.gov/media/150774/download
[3] https://www.ncbi.nlm.nih.gov/books/NBK501361/