If your dog eats grapes, contact your veterinarian or an emergency vet clinic immediately, even if they seem fine, as grape toxicity can cause severe kidney failure and death, with symptoms delayed for hours or days. Your vet will likely advise inducing vomiting (with guidance), giving activated charcoal, and starting IV fluids to protect the kidneys, which requires urgent professional care.
If your dog eats grapes or raisins, take immediate action: Contact your veterinarian or an emergency clinic immediately. Provide your vet with details about your dog's size (weight), breed, and the estimated amount consumed. They will provide further advise.
How long after eating grapes will a dog become sick? After eating grapes, some dogs may be sick or have diarrhoea within 6 to 24 hours, while others may not show any signs until later. Some dogs' kidneys may begin to stop working from one to three days after eating grapes.
Grapes can be toxic to dogs, even in small amounts, but just a lick is unlikely to cause serious harm. However, it's always wise to watch for any signs of unusual behavior or illness such as vomiting or lethargy.
What is the treatment for grape toxicity?
Scientists and veterinarians don't know the exact amount of grapes that will make a dog sick, but it may depend on a dog's weight. More than one grape or raisin per 10 pounds of body weight can put your dog at risk for kidney issues.
There is no specific antidote for grape or raisin toxicity. Treatment focuses on removing any remaining fruit to prevent further absorption of toxin (decontamination) and supportive care. For recent ingestion with no clinical signs of illness, your veterinarian will induce vomiting.
Grapes and Raisins
Toxic dose: The dose that can cause serious problems is 0.7 ounces per kilogram of grapes and 0.1 ounce per kilogram of raisins. This means that 3 grapes (or 3 raisins) could be fatal for a 2.5 pound puppy, and 12 grapes (or 12 to 15 raisins) could potentially kill a 10-pound animal.
While it seems your dog didn't swallow the grape, it's good to be cautious. Keep an eye on him for any signs of distress or unusual behavior over the next few days. Every dog reacts differently, and some may be more sensitive than others. If you notice any concerning symptoms, contact your vet immediately.
The lowest reported dosage to cause AKI is 19.6g/kg bodyweight for grapes, and 2.8g/kg bodyweight for raisins. However, as few as four to five grapes may be fatal in a dog weighing 8.2kg.
Clinical signs include vomiting or diarrhea within 6–12 hours of ingestion, lethargy, anorexia, polydipsia, dehydration, and elevation of serum creatinine and BUN concentrations. Progression to oliguric or anuric renal failure may occur within 24–48 hours.
Symptoms of grape or raisin poisoning usually start with vomiting within 6 to 24 hours of ingestion. Signs of kidney failure may take 2-3 days to develop and may cause long-term problems. Other common symptoms are: Diarrhoea.
To get rid of food poisoning fastest, focus on hydration with water, broth, or oral rehydration solutions, get plenty of rest, and avoid dairy, caffeine, spicy, and fatty foods; most cases resolve in a couple of days, but if symptoms are severe or persist, see a doctor. The key is supportive care to prevent dehydration and let your body fight the infection, as antibiotics aren't usually needed.
Even a single raisin warrants quick veterinary attention. The toxicity of raisins isn't dose-dependent, meaning some dogs may suffer kidney damage from just one raisin while others might eat more without obvious effects. This unpredictable response makes any raisin consumption dangerous.
Call Animal Poison Control
It's important to act quickly if your dog eats grapes. It's even more important if they ate a large amount. Calling animal poison control can help you to get immediate advice and a medical evaluation.
Top 10 Toxic Dog Foods
Toxicity in dogs can show up anywhere from minutes to several days or even months after exposure, depending entirely on the substance; some toxins (like alcohol or certain pesticides) are rapid, causing symptoms like drooling or seizures quickly, while others (like some rat poisons) cause delayed internal bleeding over days, requiring immediate veterinary attention even if the dog seems fine. Always contact your vet or the Pet Poison Helpline (855-764-7661) immediately if you suspect poisoning, even without symptoms.
If your dog only ate one raisin, then there is nothing to worry about. Just remove the raisins further in the future. Grapes and raisins are dangerous when eaten in a certain dose (yes, the dangerous dose of raisins is quite small, but definitely more than one piece).
Depending on the amount, alcohol can lead to alcohol poisoning in dogs, causing symptoms like vomiting, diarrhea, and difficulty breathing. There are currently no reports of grape toxicity from wine in dogs, but it could still be toxic.
The 4 C's of preventing food poisoning are Clean, Separate, Cook, and Chill, fundamental food safety practices to stop germs from spreading and multiplying, ensuring food remains safe to eat by washing hands/surfaces, keeping raw foods apart, heating food to the right temperature, and refrigerating promptly.
You should drink plenty of liquids. If vomiting is a problem, try sipping small amounts of clear liquids. Replacing lost fluids and electrolytes is the most important treatment for food poisoning. Eating saltine crackers can also help replace electrolytes.
Most people develop diarrhea, fever and stomach (abdominal) cramps within 8 to 72 hours after exposure. Most healthy people recover within a few days to a week without specific treatment. In some cases, diarrhea can cause severe dehydration and requires prompt medical attention.
The most common early symptom of grape or raisin poisoning is stomach upset within 12–24 hours following ingestion. Symptoms may include vomiting, loss of appetite, diarrhea, and lethargy. More severe signs are not seen until 24–48 hours after ingestion – often after acute kidney damage has already begun.
2) there appears to be 'individual' sensitivity in dogs. Some dogs appear to be able to tolerate small doses of these fruits without consequence, whilst other dogs may develop poisoning after eating just a few grapes or raisins.
Approximately 50% of dogs that ingest grapes or raisins go into kidney failure. If a dog only ate a few grapes or raisins (depending on the size of the patient) and received immediate treatment, the prognosis is reasonably good. If the kidneys shut down so that no urine is produced, the prognosis is poor.