Lipitor is a medication used to lower cholesterol levels in the blood, and it is one of the most commonly prescribed statins in the United States [1]. While sleep disturbances are not listed as a common side effect of Lipitor, some studies suggest that statins, including Lipitor, may cause sleep problems such as insomnia, nightmares, and sleep apnea in some people [2]. According to the British Heart Foundation, sleep disturbances are not a common side effect of statins, but they may occur in some people [3]. It is important to note that individual reactions to medications can vary, and anyone experiencing sleep disturbances while taking Lipitor should speak with their healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.aarp.org/health/drugs-supplements/info-04-2013/medications-that-can-cause-insomnia.html
[3] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/ask-the-experts/statins-and-sleep