Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. According to the sources provided, there are no specific herbs that have been identified as having a negative interaction with atorvastatin. However, it is important to note that herbal supplements can interact with prescription medications in unpredictable ways, and caution should be exercised when taking any supplement alongside Lipitor.

The NHS website [2] advises that patients taking atorvastatin should avoid consuming grapefruit or drinking grapefruit juice, as this can increase the level of the drug in the blood and increase the risk of side effects. Additionally, the website recommends that patients consult with their doctor or pharmacist before taking any herbal supplements, as some may interact with atorvastatin and cause adverse effects.

ConsumerLab [3] notes that some supplements, such as red yeast rice, may have a cholesterol-lowering effect similar to that of statins like atorvastatin. Taking these supplements alongside atorvastatin may increase the risk of side effects such as muscle pain and liver damage. The website also recommends that patients taking atorvastatin should avoid taking supplements containing high doses of vitamin D, as this can increase the risk of muscle pain and weakness.

In conclusion, while there are no specific herbs that have been identified as having a negative interaction with Lipitor, caution should be exercised when taking any herbal supplement alongside the drug. Patients should consult with their doctor or pharmacist before taking any supplements, and should avoid consuming grapefruit or drinking grapefruit juice while taking atorvastatin.

Sources:
[2] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/
[3] https://www.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR