Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood [1]. According to the National Health Service (NHS), there is no known interaction between atorvastatin and lavender oil [3].

However, it is important to note that combining medications and herbal supplements can sometimes lead to unexpected side effects. A study published in Circulation Research found that certain essential oils, including lavender oil, can interfere with the effectiveness of some medications by inhibiting certain enzymes in the liver that are responsible for breaking down drugs [2].

Therefore, while there is no known interaction between atorvastatin and lavender oil, it is always a good idea to talk to a healthcare provider before combining any medications or supplements to avoid any potential side effects or interactions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ahajournals.org/doi/full/10.1161/CIRCRESAHA.118.312782
[3] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/