A nurse is providing teaching to a client who has a new prescription for atorvastatin. Which of the following items should the nurse inform the client to avoid consuming?

A. Leafy vegetables: Leafy greens are rich in vitamin K, which can interfere with anticoagulants like warfarin, but they do not affect atorvastatin metabolism, they do not typically have a significant interaction with statin medications like atorvastatin. There is therefore no need for clients taking atorvastatin to avoid leafy vegetables. B. Grapefruit juice: Grapefruit juice inhibits CYP3A4 enzymes in the liver, which are responsible for metabolizing atorvastatin. This interaction can increase statin levels in the blood, raising the risk for adverse effects like myopathy and rhabdomyolysis. C. Bananas: Bananas are high in potassium, which may be restricted in some cardiac or renal conditions. While potassium levels are important to monitor, especially with certain other medications, they do not typically interact negatively with atorvastatin. D. Dairy products: Dairy does not interact with atorvastatin and does not need to be avoided. While a heart-healthy diet may suggest limiting high-fat dairy, there is no direct contraindication with atorvastatin.