Lipitor (atorvastatin) is a medication used to treat high cholesterol levels in the blood. According to drug interaction information provided by GoodRx [2] and Drugs.com [3], Lipitor may interact with several medications. For instance, it is not recommended to take Lipitor with drugs that contain niacin, such as Niaspan and Advicor, as this may increase the risk of muscle problems. Additionally, Lipitor may interact with other medications that are used to lower cholesterol levels, such as gemfibrozil, fenofibrate, and bile acid sequestrants. The concomitant use of these medications may increase the risk of muscle problems and kidney damage.

Moreover, Lipitor may interact with other medications, such as antibiotics, antifungal agents, and HIV medications, which may increase the risk of muscle problems. It is also important to note that grapefruit juice may interact with Lipitor and increase the level of the medication in the blood, which may increase the risk of side effects.

In conclusion, Lipitor may interact with several medications, and it is essential to inform your healthcare provider of all medications you are taking, including over-the-counter medications and supplements, to avoid potential interactions. Your healthcare provider can help you determine if Lipitor is right for you and monitor for any potential interactions. [2][3]

Sources:
[2] https://www.goodrx.com/atorvastatin/interactions
[3] https://www.drugs.com/drug-interactions/atorvastatin,lipitor.html