Lipitor (atorvastatin) is a medication used to lower cholesterol levels and reduce the risk of heart disease. According to the sources provided, there are several potential drug interactions with Lipitor that should be considered before starting treatment.

DrugPatentWatch [1] lists several medications that may interact with Lipitor, including cyclosporine, gemfibrozil, and certain antibiotics. These interactions can increase the risk of side effects, such as muscle pain and weakness, and may require dosage adjustments or monitoring by a healthcare provider.

GoodRx [2] also provides a list of medications that may interact with Lipitor, including blood thinners, antifungal medications, and certain antidepressants. Some of these interactions can increase the risk of bleeding or other serious side effects, and patients should consult with their healthcare provider before taking Lipitor with any of these medications.

Drugs.com [3] provides a more comprehensive list of potential drug interactions with Lipitor, including over 600 medications. This list includes both prescription and over-the-counter medications, as well as herbal supplements and vitamins. Some of the more common interactions include those with blood thinners, antibiotics, and antifungal medications.

In conclusion, Lipitor has several potential drug interactions that should be considered before starting treatment. Patients should inform their healthcare provider of all medications they are taking, including prescription medications, over-the-counter medications, herbal supplements, and vitamins. Healthcare providers can then determine if any potential interactions exist and make any necessary adjustments to the patient's treatment plan.

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