Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to DrugPatentWatch [1], Lipitor may interact with several other medications, including cyclosporine, fibrates, niacin, and certain antibiotics. Cyclosporine, for example, may increase the level of Lipitor in the blood, increasing the risk of side effects. Fibrates and niacin may also increase the risk of muscle problems when taken with Lipitor. Some antibiotics, such as erythromycin and clarithromycin, may increase the level of Lipitor in the blood, while others, such as rifampin, may decrease its effectiveness.

It is important to inform your healthcare provider about all medications, supplements, and vitamins you are taking before starting Lipitor. Additionally, Lipitor should not be taken with grapefruit juice, as it may increase the level of the drug in the blood and increase the risk of side effects [2].

According to WebMD [2], Lipitor should also not be taken with alcohol, as it may increase the risk of liver damage. Mixing Lipitor with alcohol may also increase the risk of muscle problems and kidney damage.

In conclusion, Lipitor may interact with several medications, including cyclosporine, fibrates, niacin, and certain antibiotics. It is important to inform your healthcare provider about all medications you are taking before starting Lipitor. Additionally, Lipitor should not be taken with grapefruit juice or alcohol. If you have any concerns or questions about potential interactions, it is best to consult with your healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details
[3] https://www.niaaa.nih.gov/publications/brochures-and-fact-sheets/harmful-interactions-mixing-alcohol-with-medicines