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The original post: /r/askscience by /u/Nearby-Bathroom618 on 2024-12-27 02:40:19.

Iirc, I learned that grapefruits can block certain enzymes in medicine,and the reason it's cautioned against eating grapefruit with most medicine is because it can cause a buildup of it. So if grapefruit causes it, would it be because grapefruit has a particular chemical that other citrus fruits don't? Or is it that citrus fruits do interfere, just not as much as grapefruit? Because if it interfered at the same strength grapefruit does, I'd assume the warning on medicines would be akin to "don't take with citrus products" instead of grapefruit specifically.