My dog ate grapes or raisins: what to do
Call your vet or an emergency vet now, whatever the amount. There is no known safe dose of grapes or raisins for dogs: some develop kidney failure after a few, and if they're seen within about 2 hours a vet can often make them vomit before the toxin is absorbed.
Free, no sign-up · Reviewed October 2026 · How it works
What did they eat?
When?
Any vomiting, weakness or not eating?
Treat this as an emergency, whatever the amount.
There is no known safe amount of grapes for dogs: some dogs develop kidney failure after a few, while others eat many without harm, and there's no way to tell in advance.
What to do now
- 1Call your vet or an emergency vet now. Within about 2 hours, they can often make your dog vomit and give charcoal to stop absorption.
- 2Don't make your dog sick at home unless a vet tells you to.
- 3Note how many and what kind, and bring the packaging.
In the US, the ASPCA Animal Poison Control Center is on (888) 426-4435 (a fee may apply). Cats rarely eat grapes, and their risk is less studied; call your vet if yours does.
For information only, not a diagnosis or a substitute for your vet. If your pet seems unwell or you're worried, call your vet.
How this tool works
Unlike chocolate, there's no dose calculator for grapes, because the amount that causes kidney failure varies hugely between dogs and can't be predicted. Recent research points to tartaric acid, which dogs handle poorly.
Instead, answer three questions and the page gives you the next steps for your situation, based on standard veterinary poison advice.
Questions.
How many grapes can a dog eat?
None. There's no known safe amount, so treat any grapes, raisins, sultanas or currants as an emergency.
Should I make my dog throw up?
Only if a vet tells you to and explains how. Home methods can be dangerous, and some dogs shouldn't be made to vomit.
When do signs of grape poisoning appear?
Vomiting often starts within 24 hours. Kidney damage can follow over 1 to 3 days, sometimes before obvious signs, which is why vets check blood tests.
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