Mixing Lipitor (atorvastatin) with grapefruit juice may increase the risk of muscle damage and rhabdomyolysis, a serious condition characterized by muscle breakdown. This is because grapefruit juice contains furanocoumarins, which inhibit the enzyme responsible for metabolizing atorvastatin, leading to higher levels of the drug in the body [1].
According to the label of the drug, Lipitor can cause muscle damage and rhabdomyolysis, sometimes fatal, particularly when taken with certain other medicines, or in people with a history of muscular disorders [2]. Grapefruit juice can raise atorvastatin levels in the body, which increases the risk of this side effect [3].
The FDA issued alerts on possible interactions involving grapefruit products and statins like atorvastatin (Lipitor). This includes warnings from the medication's manufacturer AstraZeneca, which has stated that drinking grapefruit juice while taking certain statin medications, including Lipitor, may increase the risk of side effects [4].
The risks associated with using grapefruit and atorvastatin can be particularly pronounced for certain individuals, including those already on high atorvastatin doses and people suffering health conditions like kidney or liver disease [5]. To minimize risks, patients taking atorvastatin should avoid consuming grapefruit and grapefruit products while taking the medication.
Sources:
[1] DrugPatentWatch.com. (n.d.). ATORVASTATIN calcium - Drug Information - ATORVASTATIN calcium - Lipitor. Retrieved April 2024, from https://www.drugpatentwatch.com/drug/ATV
[2] MedGuide. (n.d.). LIPITOR Tablets. Retrieved April 2024, from https://www.accessdata.fda.gov/drugsatfda_docs/label/2021/020986s048s050lbl.pdf
[3] Healthline (2021). Lipitor and Grapefruit Juice: The Risks. https://www.healthline.com/health/lipitor-and-grapefruit-juice
[4] FDA [United States]. (2012). FDA Safety Alert for Health Care Professionals - Statin medications, grapefruit juice. Retrieved from https://www.fda.gov/drugs/drug-safety-and-availability/fda-safety-alert-health-care-professionals-statin-medications-grapefruit-juice
[5] National Institute for Health and Care Excellence. (2014). Statins: the management of dyslipidaemia in adults. CG181. Retrieved from https://www.nice.org.uk/guidance/cg181/chapter/1-guidance