Grapefruit
CautionGrapefruit flesh is not toxic in small amounts but is acidic enough that vets steer dogs away from it, and the peel is flagged by both the ASPCA and the AKC. If your dog ate rind, call your vet now.
This food guide has not been reviewed by a veterinarian. It summarises general information from sources and should not be used to decide whether a food is suitable for an individual dog or to assess an emergency.
Check before feeding
Check the precautions before sharing
Risk depends on preparation, ingredients or amount. Read the precautions below; body weight alone cannot establish a safe portion.
Signs and health concerns
This list includes both observable signs and conditions identified through examination or testing. It cannot establish the cause or whether an exposure is safe.
- Vomiting
- Diarrhoea
- Reduced activity and responsiveness
- Loss of appetite
- Abdominal pain
- Intestinal blockage
- Skin inflammation
More about this food
Grapefruit is not a fruit to share with a dog. First, clear up the name: grapefruit is botanically unrelated to grapes and does not cause the acute kidney injury that grapes and raisins do. That is genuinely reassuring, and it is also where the good news ends.
The ASPCA lists grapefruit (Citrus paradisi, family Rutaceae) as toxic to dogs, cats and horses, naming essential oils and psoralens as the toxic principles, with vomiting, diarrhea, depression and potential dermatitis as clinical signs, and the familiar note that the fruit is edible while the skins and plant material cause problems. The AKC agrees that small amounts of flesh usually pass without incident but advises against it anyway, because grapefruit's citric acid can be very irritating to a dog's gut. On the peel they are blunt: grapefruit skin and rind are toxic to dogs because of the essential oils they contain, and a dog that eats rind should get a call to a veterinarian or an emergency clinic immediately. If you want to share citrus, they suggest a small piece of peeled tangerine or orange flesh instead.
One more thing worth knowing. The furanocoumarins in grapefruit are famous for interfering with drug metabolism in people — that is why pharmacy labels warn against grapefruit juice. How much this matters clinically in dogs is not established, but if your dog takes a daily medication such as a heart drug, an immunosuppressant or an anticonvulsant, there is no reason to add an unknown variable. Skip grapefruit, and if your dog already ate some, tell your vet what medications are on board.
If rind or pith was swallowed, note the amount and time and call your veterinarian, an emergency clinic, or the ASPCA Animal Poison Control Center at (888) 426-4435. Peel is tough and indigestible and can obstruct the gut. Repeated vomiting, a painful abdomen, or no stool passing all point that way. Do not induce vomiting at home. Grapefruit essential oil and diffuser liquid are a separate emergency, and VCA warns not to induce vomiting or give activated charcoal after essential oil exposure.
Frequently asked questions
- Does grapefruit cause kidney failure like grapes?
- No. Despite the name, grapefruit is not related to grapes and does not cause the idiosyncratic acute kidney injury that grapes and raisins do. It is still a fruit to avoid, for the acidity and the peel rather than the kidneys.
- My dog ate grapefruit rind. What now?
- Call now. The AKC says grapefruit skin and rind are toxic to dogs because of the essential oils and tells owners to contact a vet or emergency clinic immediately. Rind can also obstruct the gut, so note how much and when.
- My dog is on daily medication — is grapefruit a problem?
- Skip it. Grapefruit's furanocoumarins are well known for blocking drug metabolism in humans. The clinical significance in dogs is not established, but there is no upside to introducing that variable in a dog on heart, seizure or immunosuppressant medication.