Lipitor (atorvastatin) is a widely used drug for treating high cholesterol. It is important to be aware of potential drug interactions to avoid any negative effects. According to the sources provided, Lipitor can interact negatively with certain drugs.

GoodRx [1] states that Lipitor may interact with drugs such as cyclosporine, gemfibrozil, and protease inhibitors, which can increase the risk of muscle damage and other side effects. It is recommended to avoid taking these drugs with Lipitor or to closely monitor for any adverse effects.

DrugPatentWatch [2] lists a few more drugs that can interact with Lipitor, including clarithromycin, erythromycin, and diltiazem. These drugs can increase the levels of Lipitor in the blood, leading to an increased risk of side effects.

Verywell Health [3] also warns of potential interactions with other medications, such as certain antibiotics, antifungal drugs, and HIV medications. These drugs can also increase the levels of Lipitor in the blood, which can lead to an increased risk of side effects.

In summary, Lipitor can interact negatively with certain drugs, including cyclosporine, gemfibrozil, protease inhibitors, clarithromycin, erythromycin, diltiazem, certain antibiotics, antifungal drugs, and HIV medications. It is important to discuss all medications and supplements with your healthcare provider to avoid any potential drug interactions.

Sources:
[1] https://www.goodrx.com/atorvastatin/interactions
[2] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[3] https://www.verywellhealth.com/statin-side-effects-and-drug-interactions-698202