Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], there are no known drug interactions between atorvastatin and lavender oil. However, the NHS [2] advises caution when taking herbal supplements with atorvastatin, as some supplements may affect the way the drug works. The NHS recommends consulting with a healthcare professional before taking any herbal supplements, including lavender oil, while on atorvastatin.

A study published in the Journal of Advanced Pharmaceutical Technology & Research [3] found that lavender oil had no significant effect on the pharmacokinetics of atorvastatin in rats. However, it is important to note that animal studies may not always be directly applicable to humans.

In conclusion, while there are no known drug interactions between atorvastatin and lavender oil, it is recommended to exercise caution and consult with a healthcare professional before taking any herbal supplements while on atorvastatin.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3639265/