Dog Ate Sugar-Free Gum or Xylitol? What to Do Right Now
Xylitol is a sugar alcohol used to sweeten sugar-free products. People handle it fine, but dogs don't. In dogs it triggers a fast release of insulin, which makes blood sugar fall sharply (hypoglycaemia).
Step 1: Act now
- Take the packet away and keep it, so you can read the label and count what is missing
- Call your vet, an emergency clinic or a pet poison line. US: ASPCA Animal Poison Control +1 888-426-4435 or Pet Poison Helpline +1 855-764-7661 (fees may apply)
- Have your dog's weight, the product name and the time it was eaten ready
- Don't make your dog vomit at home unless a vet tells you to. Dogs with low blood sugar can get worse quickly
How much xylitol is dangerous?
According to the Merck Veterinary Manual, doses above about 100 mg per kg of body weight (45 mg per lb) have been linked to low blood sugar, and doses above about 500 mg per kg (227 mg per lb) can cause severe liver injury. The amount in one piece of gum varies a lot from brand to brand, so a few pieces can be enough for a small dog. Let the vet do the maths.
Signs to watch for
- Vomiting
- Weakness, tiredness or less activity than usual
- Staggering, wobbliness or poor coordination
- Collapse, trembling or seizures
- Later (after 24-48 hours): yellow gums or eyes, bruising or bleeding, and vomiting, which can be signs of liver damage
The FDA says the blood-sugar drop can happen within 10-60 minutes. With some gums the signs can be delayed by up to 12-24 hours, so a dog that looks fine at first may still need monitoring in hospital.
Where xylitol hides at home
- Sugar-free gum and breath mints (the most common cause)
- Sugar-free sweets, chocolate and 'skinny' ice cream
- Some peanut and nut butters: check the label before using one for pills or a lick mat
- Sugar-free baked goods and bulk xylitol for baking
- Chewable vitamins, gummy supplements, cough syrups and some liquid medicines
- Toothpaste and mouthwash: only ever use pet toothpaste for pets
On labels, xylitol may also appear as birch sugar or wood sugar.
Prevention
- Keep handbags, coat pockets and backpacks off the floor, especially when guests visit for the holidays
- Store gum, mints and vitamins in a closed cupboard
- Ask guests to keep sugar-free sweets out of reach
- Read the label on any 'sugar-free' or 'low sugar' food before sharing a bite
Quick FAQ
My dog ate one piece of sugar-free gum. Is that an emergency? Call your vet or a poison line now. One piece can matter for a small dog, and the vet can tell you quickly whether your dog needs to come in.
Is xylitol dangerous for cats? The Merck Veterinary Manual says dogs are the only domestic species in which xylitol poisoning has been reported, so cats aren't at risk in the same way. Ferrets can be affected.
What is the treatment? Usually the vet checks blood sugar, gives intravenous sugar (dextrose) if needed, and monitors the liver for a few days. Dogs treated early for low blood sugar usually do well.
See also: Christmas foods toxic to dogs, dog ate chocolate and our pet first aid kit checklist.
Sources: FDA: Paws off xylitol; it's dangerous for dogs; Merck Veterinary Manual: xylitol toxicosis in dogs (reviewed Sept 2024); Pet Poison Helpline: xylitol.