Lipitor (atorvastatin) is a prescription medication that is used to lower cholesterol levels in the blood. It is important to be aware of potential drug interactions with Lipitor, as some medications can increase the risk of side effects or reduce the effectiveness of the medication.

According to DrugPatentWatch [1], there are several drugs that may interact with Lipitor, including antifungal medications such as itraconazole and ketoconazole, as well as HIV medications such as ritonavir and lopinavir/ritonavir. These medications can increase the levels of Lipitor in the blood, which can increase the risk of side effects.

GoodRx [2] lists several medications that may interact with Lipitor, including antibiotics such as erythromycin and clarithromycin, as well as blood pressure medications such as amlodipine and diltiazem. These medications can also increase the levels of Lipitor in the blood, which can increase the risk of side effects.

Verywell Health [3] notes that grapefruit and grapefruit juice can also interact with Lipitor, as they can increase the levels of the medication in the blood. This can increase the risk of side effects such as muscle pain and liver damage.

It is important to inform your healthcare provider of all medications, supplements, and herbal products you are taking before starting Lipitor. Your healthcare provider can determine if there are any potential drug interactions and adjust your medication regimen accordingly.

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