Lipitor is a prescription medication that is used to lower cholesterol levels in the body. According to the sources provided, there are no specific herbs that have been identified as having negative interactions with Lipitor. However, it is important to exercise caution when taking any herbal supplements while on Lipitor.

The NHS website advises that St. John's Wort, which is commonly used to treat depression, may reduce the effectiveness of Lipitor. This is because St. John's Wort can increase the activity of liver enzymes that break down Lipitor in the body, leading to a decrease in its effectiveness.

ConsumerLab also recommends caution when taking red yeast rice supplements, which are often used as a natural alternative to statins. This is because red yeast rice contains a compound called monacolin K, which is chemically identical to the active ingredient in lovastatin, a prescription statin medication. Taking red yeast rice supplements along with Lipitor could lead to an increased risk of side effects.

It is always important to consult with a healthcare provider before taking any herbal supplements, especially if you are taking prescription medications like Lipitor. Your healthcare provider can help you determine if any herbal supplements may interact negatively with Lipitor or other medications you are taking.

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.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/