Overview
About Grapefruit
Grapefruit is more than a tart breakfast citrus.
It is very high in oxalate, high in salicylates, and acts as a histamine liberator, an unusual triple for a fruit, and it is high FODMAP by volume with a moderate excess-fructose load. On top of that trigger profile, grapefruit is famous for interacting with dozens of prescription medications, an effect most everyday citrus like oranges and clementines does not share.
Sensitivities
How Grapefruit scores
Watch for
What trips people up
- Very high in oxalate, the most oxalate-heavy fruit in this group, which matters if you form calcium-oxalate kidney stones
- Histamine liberator and high in salicylates, so it can set off flushing, itching, headaches or a runny nose in people sensitive to either
- High FODMAP by volume, with a moderate excess-fructose load, so large servings or grapefruit juice can bring on bloating and loose stools
- Contains furanocoumarins that block the CYP3A4 enzyme, so grapefruit can raise blood levels of many statins, blood-pressure and other drugs to unsafe levels; check with a pharmacist
Diet fit
Where it fits
Swap ideas
More alternatives
FAQ
Common questions about Grapefruit
Why does grapefruit interact with so many medications?
Grapefruit contains furanocoumarins, mainly bergamottin, that switch off CYP3A4, the enzyme in your gut that breaks down many drugs. With the enzyme blocked, more of the drug reaches your bloodstream, which can push levels dangerously high. Pomelo, Seville (bitter) oranges and limes share this effect, but common oranges, mandarins and clementines are low in furanocoumarins and are generally safe.
Is grapefruit high in oxalate?
Yes. Grapefruit is one of the higher-oxalate fruits, so if you are prone to calcium-oxalate kidney stones it is worth limiting. Lower-oxalate citrus alternatives include clementines and mandarins.
What citrus can I eat instead of grapefruit?
Clementines and mandarins give you a similar citrus hit without the drug interaction and are far lower in oxalate, salicylate and FODMAPs. They still deliver vitamin C and a sweet-tart flavour while avoiding grapefruit’s main problems.
References
Read the background
Ratings reflect the Triggerbites ingredient database and may vary with portion size and preparation.