Lipitor, which contains the active ingredient atorvastatin, is a medication used to lower cholesterol levels in the blood [1]. When taking Lipitor, it is important to be cautious when using herbal remedies or supplements, as they may interact with the medication and affect its effectiveness [2]. The Mayo Clinic suggests that certain herbal supplements, such as St. John's wort, ginkgo biloba, and garlic, may interact with Lipitor and increase the risk of side effects, such as muscle pain and liver damage [3]. Additionally, herbal supplements that affect blood clotting, such as ginseng and ginger, may increase the risk of bleeding when taken with Lipitor. It is recommended to speak with a healthcare provider before taking any herbal remedies or supplements while on Lipitor to ensure that there are no potential interactions that could affect the medication's effectiveness or cause harm [2].

Sources:
[1] DrugPatentWatch. (n.d.). Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] NHS. (2021). Atorvastatin: taking atorvastatin with other medicines and herbal supplements. Retrieved from https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/
[3] Mayo Clinic. (2021). Herbal supplements: What to know before you buy. Retrieved from https://www.mayoclinic.org/healthy-lifestyle/consumer-health/in-depth/herbal-supplements/art-20046488