Lipitor is a brand name for atorvastatin, a medication used to lower cholesterol levels. It is essential to know which herbs should be avoided when taking Lipitor to prevent any adverse reactions.

According to the NHS [2], some herbs can interact with Lipitor, and it is advisable to avoid them. These herbs include St John's Wort, which can reduce the effectiveness of Lipitor and increase the risk of side effects. Another herb to avoid is garlic supplements, which can increase the risk of bleeding if taken with Lipitor. Additionally, grapefruit juice can also interact with Lipitor, leading to an increase in the concentration of the medication in the bloodstream, which can cause adverse effects.

ConsumerLab [3] also advises avoiding herbs that can interact with statins, including Lipitor. These herbs include guggul, which can reduce the effectiveness of statins, and ginger, which can increase the risk of bleeding if taken with statins. Furthermore, green tea extract and licorice root can also interact with statins, leading to an increase in the concentration of the medication in the bloodstream.

In conclusion, it is essential to avoid St John's Wort, garlic supplements, grapefruit juice, guggul, ginger, green tea extract, and licorice root when taking Lipitor to prevent any adverse reactions. If you are unsure about any supplements or herbs, it is best to consult your healthcare provider before taking them.

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/