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What is Grapes Poisoning?

Grapes and grape containing products are poisonous to dogs. This includes grape jelly or juice, as well as dried grapes (raisins), and even currants which belong to the same family as grapes. The mechanism of poisoning is currently unknown, but grape poisoning can cause severe kidney failure in dogs. Most studies suggest that the toxic dose is about 32 grams per kilogram of the dog’s weight for grapes and 11-30 grams for raisins, however symptoms of poisoning can sometimes be present even at very low doses. No amount of grape containing products are considered safe for dogs.

The toxin can be found in all types of grapes, including seeded, seedless, organic, and those used for wine. Vomiting and diarrhea are the initial signs of grape toxicity, beginning about 6-12 hours after ingestion. This is followed by general lack of energy, weakness, dehydration, thirst, and failure to produce an adequate amount of urine. Fatal kidney dysfunction will develop in 1-3 days. If vomiting is induced 15-20 minutes after ingestion this can help to reduce absorption and limit the severity of the symptoms. Once kidney dysfunction is present intensive fluid treatment will be necessary to save your dog’s life. Large doses may end up being fatal even with treatment.

Grapes contain a toxin that causes kidney failure in dogs. Grapes, raisins, and grape containing products will all make a dog very sick when ingested. This is called grape poisoning or grape toxicity. Immediate treatment is necessary and some cases can still end up being fatal.

Grapes Poisoning Average Cost

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Average Cost

$1,500

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Symptoms of Grapes Poisoning in Dogs

These are the symptoms you may see if your dog has eaten grapes or raisins. Grape poisoning should be treated as an emergency, so you will need to get veterinary treatment as soon as possible.

  • Vomiting
  • Diarrhea
  • Grapes or raisins in vomit or stool
  • Low energy
  • Loss of appetite
  • Weakness
  • Signs of abdominal pain
  • Excessive thirst
  • Lack of urine production (anuria)
  • Tremors

Types

Any type of grape containing product can be dangerous for your dog.

  • Grapes
  • Grape juice
  • Raisins
  • Currants
  • Trail-mix
  • Baked products containing grapes or currents
  • Wine
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Causes of Grapes Poisoning in Dogs

These are the most common risk factors associated with grape poisoning.

  • Owner feeding the dog foods that contain grapes
  • Grapes left out in a fruit bowl 
  • Open container of trail mix with raisins
  • Spoiled grapes thrown in the garbage
  • Grapes or currants growing in the garden
  • Wild grapes
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Diagnosis of Grapes Poisoning in Dogs

Diagnosis of grape toxicity is based on a history of grape ingestion, symptoms, and a blood test. Pieces of undigested grapes in the vomit or feces may be the best indication if you didn’t see the incident, especially when this is combined with lethargy, general weakness, and lack of appetite. If you’re not sure, a history of your dog’s activities may be helpful. If you think your dog has ingested a baked product, you should check the list of ingredients for currents or grape-based sweeteners and bring a sample along for the veterinarian to examine. In the later stages, a blood test will show kidney failure with increases in BUN (blood urea nitrogen), as well as creatinine, phosphorus, and calcium. The veterinarian will need to rule out other toxicities which could also cause kidney failure, especially if the poisoning incident was unobserved.

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Treatment of Grapes Poisoning in Dogs

If you think your dog has been poisoned, it’s a good idea to call a poison help-line for instructions on immediate treatment. Follow the advice of the agent exactly and take your dog to see a veterinarian as soon as possible.

If the poisoning took place within the last two hours, the veterinarian will try to induce emesis and reduce further absorption. Gastric lavage may be carried out under anesthesia. Activated charcoal will also be given since this medication binds to the toxin in the dog’s stomach and also helps to limit absorption. For mild cases that are discovered immediately this may be all the treatment that is needed.

If your dog has ingested a large amount of grapes or grape containing product intravenous fluids will be necessary for at least 48 hours. This will help to increase urine production, support kidney function and flush the toxin out of the body. If the dog is still only producing a very small amount of urine, further medications may be necessary to stimulate the kidneys. If the kidneys have stopped producing urine altogether the incident will usually end up being fatal.

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Recovery of Grapes Poisoning in Dogs

The level of toxicity in grapes is considered mild to severe. Dogs may recover from low doses that are treated immediately, but large amounts have a poor prognosis. Immediate treatment can increase your dog’s chance of survival.Any amount of grapes or grape containing product is dangerous for dogs, so the best way to manage the condition is to avoid exposure. Don’t leave out open containers of grapes or raisins. Put spoiled grapes through a food processor rather than disposing of them in the trash, and don’t give you dog any foods designed for humans. Keep your dog away from dumpsters, especially those associated with grocery stores which could contain large amounts of spoiled grapes. Protect currant bushes in your garden and be aware of any grapes growing wild around your house. This is especially true if your dog tends to eat everything. Most dogs will avoid poisonous plants in the wild, but domestic dogs that are more used to eating human food may not have this instinct.

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Grapes Poisoning Average Cost

From 51 quotes ranging from $500 - $6,000

Average Cost

$1,500

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Grapes Poisoning Questions and Advice from Veterinary Professionals

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Pomeranian

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Two Years

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Unknown severity

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8 found helpful

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Noisy Breathing

My dog ate maybe 2-3 grapes (Unseen) do I take to clinic

Sept. 5, 2020

Owner

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Dr. Sara O. DVM

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8 Recommendations

Hello, The toxic dosage of grapes is different for every dog. Common signs of grape toxicity are vomiting, diarrhea or lethargy. These signs will start to show up after 12 to 24 hours. If you notice any of these issues, it would be best to see your vet.

Sept. 5, 2020

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Chihuahua

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Fourteen Years

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Unknown severity

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Thirsty

Very old 7lb chihuahua on heart medication and cough suppressants, ate half a raisin. Hasn't vomited or had an irregular bowel movement in 24 hours, and most of the symptoms listed are just a regular day for her. How can I tell if the raisin is affecting her?

Aug. 6, 2020

Owner

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Dr. Michele K. DVM

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0 Recommendations

Thank you for your question. The best way to see if she is having a problem with the raisin would be to have your veterinarian run a blood panel to check her kidney enzymes, and possible repeat it again in 24 hours to see if they are elevated. I hope that all goes well for her!

Aug. 6, 2020

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Brindle Pitt mix

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Four Years

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Unknown severity

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1 found helpful

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Unknown severity

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Nothing Yet

I’m not sure if my dog ate a grape my nephew had some in a bowl this morning but he said he ate them all however he will give opposite answers sometimes how can I figure out if my dog ate any?

Aug. 1, 2020

Owner

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Dr. Michele K. DVM

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1 Recommendations

Thank you for your question. The problem with grapes, as a toxin, are that some dogs are perfectly fine eating them, and some dogs will go into kidney failure, and by the time we see signs, it may be too late. We cannot tell which dogs will be affected, unfortunately, so we have to treat all dogs proactively. We typically put these dogs on IV fluid therapy for 2-3 days, and check kidney values throughout the treatment. Taking him into the ER right away is the right thing to do, if you think that he got any of the grapes. I hope that he is okay.

Aug. 1, 2020

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Miniature Australian Shepherd

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Eight Months

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Unknown severity

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Lethargic

My dog found 2 grapes on the ground outside. He punctured them but I caught him before he actually swallowed or ate them. My vet said to take him to the emergency clinic but other than seeming a bit sleepy he seems to be ok. Should I still take him in or monitor him? We don’t have a ton of extra money for an emergency visit if it isn’t necessary but it’s our first dog so we don’t know what to do.

Aug. 1, 2020

Owner

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Dr. Michele K. DVM

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1 Recommendations

Thank you for your question. The problem with grapes, as a toxin, are that some dogs are perfectly fine eating them, and some dogs will go into kidney failure, and by the time we see signs, it may be too late. We cannot tell which dogs will be affected, unfortunately, so we have to treat all dogs proactively. We typically put these dogs on IV fluid therapy for 2-3 days, and check kidney values throughout the treatment. Unfortunately, that is the right thing to do, if he got any of the grapes. I hope that he is okay.

Aug. 1, 2020

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Labrador Retriever

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Three Months

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Unknown severity

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None Yet

my dog ate a uncrustables sandwich thay t he had stolen out of my hand. it was almost the entire thing. this happened 5 minutes ago. after a minute he went to go drink water and poop.

July 25, 2020

Owner

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Dr. Michele K. DVM

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Thank you for your question. I do not believe that the sandwich will cause any toxicities other than mild GI upset, possibly. If you notice any vomiting, diarrhea, lethargy or loss of appetite, it would be best to have him seen by a veterinarian, but I suspect he will be okay. I hope that all goes well for him.

July 25, 2020

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Blue

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German Shepherd

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14 Months

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Moderate severity

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Moderate severity

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Lethargy
Vomiting
Lack Of Appetite

Need some help. Our 14 month old GSD we think ate some grapes from our grape tree in the back yard. He has been vomiting for since yesterday. He wont eat or drink and still is vomiting. He doesn't have diarrhea and is still peeing fine. I have called the vet and they are not being helpful and say we should just wait.

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Diego

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Siberian Husky

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1 Year

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Mild severity

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Mild severity

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Diarrhea
Vomiting

On Thursday evening around 6 my dog, Diego ate 3-4 grapes that we gave him. We were unaware that they were poisonous. Around 10 Friday morning he threw up a few times and we were unsure why and after doing some digging we found that grabs are bad. The rest of Friday and Saturday he was fine: normal (if not extra high) energy levels, no dehydration, no pains in the stomach, or loss of appetite. The only symptom he has is runny diarrhea, starting at 1:30 am Sunday morning he went to the bathroom every two hours till about 12:30 pm. I also recently noticed he was peeing but not as much as normal. Now it is Sunday at 1:00 pm and I am unsure if I should take him to the vet asap or wait till tomorrow as his main and only symptom is diarrhea.

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Maximus

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Old English Sheepdog

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10 Months

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Fair severity

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Fair severity

Has Symptoms

None

My aunt fed my dog 1 grape. He weighs 60 pounds/ 27.2 kgs. Not sure if I should induce vomiting or not? Any suggestions I don’t want to wait on it if this could affect him later.

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Daisy

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Yorkshire Terrier

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5 Months

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Fair severity

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Fair severity

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None

My puppy ate a few grape. I gave her a little bit of peroxide to help her vomit. She did vomit them up. Since then she has been alright and has been eating and drinking but still a little concerned about her

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Daisy

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Yorkshire Terrier

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5 Months

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Mild severity

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0 found helpful

pill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filledpill-rating-filled

Mild severity

Has Symptoms

None

Our Puppy ate some grapes. Right after she did it I gave her a little bit of peroxide to help her vomit. She did vomit it up. She has been acting alright since then. She’s been eating and drinking

Grapes Poisoning Average Cost

From 51 quotes ranging from $500 - $6,000

Average Cost

$1,500

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