Lipitor is a commonly prescribed medication used to lower cholesterol levels in the body. It is important to be aware of potential drug interactions, including supplements, when taking Lipitor. According to ConsumerLab [2], there are several supplements that should be avoided when taking statins, including Lipitor. These supplements include red yeast rice, St. John's Wort, and grapefruit juice. Red yeast rice contains a naturally occurring substance that is similar to the active ingredient in statins, and taking it in combination with Lipitor can increase the risk of side effects. St. John's Wort can reduce the effectiveness of Lipitor, and grapefruit juice can increase the concentration of Lipitor in the bloodstream, leading to an increased risk of side effects.

SingleCare [3] also warns against taking certain supplements with Lipitor, including niacin, vitamin D, and coenzyme Q10. Niacin can increase the risk of muscle damage when taken with statins, and vitamin D can reduce the effectiveness of Lipitor. Coenzyme Q10 can also reduce the effectiveness of Lipitor and may increase the risk of side effects.

It is important to talk to a healthcare provider before taking any supplements while on Lipitor. Some supplements may interact with Lipitor and increase the risk of side effects or reduce the effectiveness of the medication. It is also important to follow the prescribed dosage of Lipitor and not to exceed the recommended amount.

Sources:
[2] https://www.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/
[3] https://www.singlecare.com/blog/atorvastatin-interactions/
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR