Does eating grapefruit reduce the effectiveness of furosemide?

Yes, grapefruit can reduce the effectiveness of furosemide. Grapefruit contains compounds that inhibit certain enzymes in the liver and intestines, which can affect the metabolism of various medications. While furosemide is not primarily metabolized by these enzymes, grapefruit may still influence its absorption or efficacy in some individuals. It's best to consult a healthcare provider regarding food interactions with any medication.