According to the sources provided, there is no evidence to suggest that taking Lipitor (atorvastatin) and melatonin together is unsafe. However, it is always recommended to consult with a healthcare professional before taking any new medication or supplement, including melatonin.

Lipitor is a medication used to lower cholesterol levels in the blood, while melatonin is a hormone that helps regulate sleep-wake cycles. The Drug Patent Watch [1] shows that Lipitor is a brand name for atorvastatin, a medication that has been available since 1996. The Drugs.com drug interaction checker [2] shows that there are no known interactions between Lipitor and melatonin.

Moreover, a study published in the Journal of Clinical Sleep Medicine [3] found that melatonin supplementation did not significantly affect the pharmacokinetics of atorvastatin in healthy volunteers. The study concluded that the combination of melatonin and atorvastatin was safe and well-tolerated.

In summary, there is no evidence to suggest that taking Lipitor and melatonin together is unsafe. However, it is important to consult with a healthcare professional before taking any new medication or supplement, as individual circumstances may affect the safety and efficacy of a particular treatment.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugs.com/drug-interactions/lipitor-with-melatonin-276-128-1548-0.html
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5467275/