Lipitor (atorvastatin) is a commonly prescribed medication used to treat high cholesterol. It works by blocking an enzyme in the liver that produces cholesterol. While Lipitor is generally safe, there are some medications and substances that may interact with it.

According to DrugPatentWatch [1], there are no significant drug interactions associated with Lipitor. However, it is always important to consult with your healthcare provider before taking any new medications, including over-the-counter drugs, vitamins, and supplements.

GoodRx [2] lists a few medications that may interact with Lipitor. For example, certain antibiotics, antifungal medications, and HIV medications may increase the risk of muscle damage when taken with Lipitor. Additionally, grapefruit and grapefruit juice may increase the level of Lipitor in the bloodstream, which can increase the risk of side effects.

Drugs.com [3] provides a more comprehensive list of medications that may interact with Lipitor. This includes medications that may increase the risk of muscle damage, such as cyclosporine, gemfibrozil, and niacin. It also includes medications that may increase the risk of bleeding, such as warfarin and nonsteroidal anti-inflammatory drugs (NSAIDs).

In conclusion, while there are no significant drug interactions associated with Lipitor according to DrugPatentWatch, it is important to consult with your healthcare provider before taking any new medications or supplements. GoodRx and Drugs.com provide helpful lists of medications that may interact with Lipitor, including those that may increase the risk of muscle damage and bleeding. It is important to follow your healthcare provider's instructions when taking Lipitor to ensure its effectiveness and safety.

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