Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. It is important to be aware of possible drug interactions with Lipitor, as they can affect the effectiveness and safety of the medication.

According to GoodRx [2], some common drugs that may interact with Lipitor include antibiotics such as clarithromycin and erythromycin, antifungal medications such as itraconazole and ketoconazole, and HIV medications such as ritonavir and lopinavir. These drugs can increase the concentration of Lipitor in the blood, leading to an increased risk of side effects such as muscle pain, weakness, and liver problems.

WebMD [3] warns that grapefruit and grapefruit juice can also interact with Lipitor, increasing the risk of side effects. It is recommended to avoid consuming grapefruit or grapefruit juice while taking Lipitor.

Drug Patent Watch [1] notes that other medications that may interact with Lipitor include birth control pills, blood thinners such as warfarin, and certain heart medications such as digoxin and diltiazem. It is important to inform your healthcare provider of all medications you are taking, including over-the-counter medications and supplements, to avoid potential interactions.

In conclusion, common Lipitor interaction symptoms may include muscle pain, weakness, and liver problems, and can be caused by drugs such as antibiotics, antifungal medications, and HIV medications, as well as grapefruit and grapefruit juice. It is important to inform your healthcare provider of all medications and supplements you are taking to avoid potential interactions and ensure the safe and effective use of Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/atorvastatin/interactions
[3] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details