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.
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
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
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.
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.
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.
Grapes Poisoning Questions and Advice from Veterinary Professionals
Has Symptoms
Omg. Had no idea grapes were poison for dogs! Was snacking on a bag of green ones a few weeks ago and was feeding my 20 pound Pug and 5 lb chi mix a few. They did not vomit or have diarrhea, and they are still acting the same. I’ll never give them grapes again of course but should I still take them to the vet despite no symptoms from either pup after a few weeks??
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My dog ate an unknown amount of grapes. We induced vomiting around the 2 hour mark. Emergency hospital says she will be fine but we are wondering if we should take her to another place since this one won't do anything.
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My dog has had diarrhea for three days and while trying to figure out what the cause was, I narrowed it down to believing that he may have gotten ahold of a oatmeal/raisin cookie that fell on the floor. He has been eating and drinking normally and overall acting fine, but the consistency of his stool is still runny and tonight he seems to be peeing less. I gave him an activated charcoal pill yesterday, not sure how much that can still help. Please, is it too late? What should I do?
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My puppy ate 7 or 8 grapes 10 days ago without any symptoms however today she doesn't seem her usual self I don't know if she is just tired, she hasn't lost her appetite and seems to be drinking and urinating as normal..
If a dog is poisoned do the symptoms always show right away or is there a chance 10 days down the line she could get ill? Is damage always done when they eat grapes and maybe the damage is only taking effect now I'm worried 😣
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Hey I was wondering my dog has been eating grapes and I had no idea that they were poison to them but it's been a couple years and nothings seems to be wrong. Should I go to the vet though. Cause honestly I thought it was just going to cause diarrhea.
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My dog got into a bag of trail mix, while
I was in the bathroom, I caught him with it and it seemed he didnt get very much(the bag was nearly empty) it has been two days and he hasn't had any symptoms, should
I still
Be worried?
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My dog was left in my room for about 2 minutes and she’s never gotten on my bed, but she did and I had a container of grapes and I don’t know if she ate one. She has been eating and drinking fine but has been lazy since the incident. What do I do?
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I fed my pup 3 half pieces of grapes, but i immediately got a funny feeling and looked online and saw they poisonous to dogs. I induced vomiting right away and he vomited all three undigested pieces. Should i still take him to the vet tomorrow?
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Should I be worried? I had a glass of wine 15 minutes before biting the end off of a baby carrot and giving it to my Golden Retriever. Should I be worried about grape poisoning?
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My husband fed our Doberman two grapes on Sunday, before I intervened, stressing that they are toxic to dogs. He seemed fine afterwards. Monday night he seemed lethargic, and just off personality wise,but he is old so we didn't think much of it. Tuesday he was weaker, still grumpy and lethargic, but is eating and drinking fine. I'm not sure what to do, he is a very large doberman, and it was two grapes, is that toxicity to size ratio something to worry about, should I bring him to the Vet tomorrow?
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