Can Dogs Eat Xylitol?
No. The sugar substitute in sugar-free gum and some peanut butters can crash a dog's blood sugar within minutes. This is an emergency.
No, and xylitol may be the most dangerous thing in a modern kitchen for a dog, precisely because it hides. It is a sugar substitute found in sugar-free gum, mints, some peanut and nut butters, sugar-free baking, and even toothpaste and some medicines. In people it is harmless. In dogs, a small amount can drop blood sugar to dangerous levels within minutes, and larger amounts can destroy the liver.
If Your Dog Has Just Eaten Something With Xylitol
This is an emergency. Go to your vet or an emergency clinic now, and call ahead on the way. If you need advice first, the US animal poison lines (both charge a fee) are:
- ASPCA Animal Poison Control: (888) 426-4435
- Pet Poison Helpline: (855) 764-7661
Bring the packaging. Do not try to make your dog vomit at home: if blood sugar is already falling, vomiting can make things worse, and a vet needs to check first. If your dog becomes weak or wobbly on the way, ask the vet on the phone whether to rub a little honey or syrup on the gums to buy time. Never pour anything into the mouth of a dog that is collapsing or seizing.
What It Does
In a dog’s body, xylitol is mistaken for sugar and triggers a large, fast release of insulin. Blood sugar crashes, often within 10 to 60 minutes, and a hypoglycemic dog can weaken, collapse and seize. At higher doses xylitol also causes acute liver failure, which can develop over the following one to three days, sometimes in dogs that never showed the low blood sugar stage.
How Little It Takes
Low blood sugar has been reported from around 0.1 g of xylitol per kilogram of body weight, and liver failure from around 0.5 g per kilogram. For a 10 lb dog that means roughly half a gram can cause a crash. Sugar-free gums vary a lot, from a fraction of a gram to around a gram per piece, so for a small dog a single stick or a couple of pieces can be enough. A whole pack is a life-threatening dose for a large dog too.
Where Xylitol Hides
| Product | Why it catches people out |
|---|---|
| Sugar-free gum and mints | The most common source, usually from a bag or coat pocket |
| Some peanut and nut butters | Rare, but it only takes one jar. See our peanut butter guide |
| Sugar-free baking, candy and syrup | Often labeled “keto” or “diabetic friendly” |
| Toothpaste and mouthwash | Never use human toothpaste on a dog |
| Chewable vitamins and gummies | Tasty, so dogs eat the whole bottle |
| Some human medicines | Including some liquid medications and melt-in-the-mouth tablets. Never give a dog human medicine without asking a vet |
How To Read A Label
- Look for xylitol in the ingredients, and its other names: birch sugar and wood sugar.
- “Sugar free”, “no sugar added”, “keto” and “sweetened with natural sweeteners” are all prompts to check, not proof of xylitol.
- Other sugar alcohols such as erythritol, sorbitol and maltitol are not known to cause the same insulin crash, but can still give a dog diarrhea in quantity.
Signs Of Xylitol Poisoning
- Within an hour or so: vomiting, weakness, wobbling or stumbling, trembling, sleepiness, collapse, seizures.
- Over the next one to three days: signs of liver trouble, such as yellow gums or eyes, black tarry stools, bruising, and lethargy.
Treatment is blood sugar monitoring and glucose, often for a day or more, plus liver support and blood tests. Dogs treated before liver damage sets in generally do well.
Prevention Is Mostly Storage
Keep gum and mints out of bags and coats that live on the floor, keep medicines and vitamins in a cupboard, and check the label of any peanut butter or spread before it goes in a toy. For every other food question, the food checker gives a straight answer on 115 foods.
In The Kibble reads labels and publishes what the numbers say. Guides are general information, not veterinary advice. Your vet knows your dog's history and we do not, so take anything here to them before you change how you feed.