According to the sources provided, there is no specific mention of Lipitor (atorvastatin) decreasing milk supply.

The first source, DrugPatentWatch, provides information about the patent status and expiration of various drugs, including Lipitor. However, it does not mention anything about the effect of Lipitor on milk supply [1].

The second source, the National Health Service (NHS) website, provides information about atorvastatin (the generic name for Lipitor) and its use during pregnancy, breastfeeding, and fertility. While the NHS advises caution when using atorvastatin during breastfeeding, it does not mention any direct impact on milk supply [2].

The third source is a document from the U.S. Food and Drug Administration (FDA) that provides prescribing information for Lipitor. While the document mentions potential adverse reactions and side effects of Lipitor, it does not specifically mention a decrease in milk supply [3].

It is important to note that while these sources do not mention a decrease in milk supply as a side effect of Lipitor, individual responses to medications can vary. If you have concerns about your milk supply while taking Lipitor, it is recommended to consult with your healthcare provider for personalized advice.

Sources:
[1] DrugPatentWatch. Lipitor - Tradename Details. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] NHS. Atorvastatin - Pregnancy, breastfeeding, and fertility. Retrieved from https://www.nhs.uk/medicines/atorvastatin/pregnancy-breastfeeding-and-fertility-while-taking-atorvastatin/
[3] U.S. Food and Drug Administration. Lipitor (atorvastatin calcium) tablets prescribing information. Retrieved from https://www.fda.gov/media/150774/download