Dog ate xylitol (sugar-free sweetener)
If your dog has eaten anything containing xylitol — sugar-free gum, mints, sweets, some peanut butters, baked goods or dental products — treat it as an emergency and call a veterinarian or poison control line now. Xylitol can cause a rapid, dangerous drop in blood sugar within minutes to an hour, and larger amounts can cause liver damage. Even small quantities can be harmful, so do not wait for signs. Bring the packaging so the vet can judge the dose.
Go to a vet now if
- Any ingestion of sugar-free gum, sweets, mints or xylitol-containing products
- Weakness, wobbliness, tremors, collapse or seizures (low blood sugar)
- Vomiting, then sudden lethargy
- Any uncertainty about whether a product contains xylitol
Call a vet today if
- There is no safe wait-and-see for suspected xylitol — always call now
What to tell the vet
- The product and that it contains xylitol
- How much was eaten and when
- Your dog's weight
- Any signs such as weakness or vomiting
- The packaging/ingredient list if available
- Other conditions or medicines
What not to do
- Do not wait for symptoms — xylitol can drop blood sugar within minutes
- Do not make your dog vomit unless directed by a vet
- Do not assume 'sugar-free' is safe — check for xylitol (also labelled birch sugar or E967)
What your vet may check
Your vet will assess the dose, check and monitor blood sugar, and may check liver values. Treatment can include sugar supplementation, fluids and hospital monitoring until blood sugar and liver values are stable.
Recovery support after veterinary assessment
With prompt treatment many dogs recover well. Your vet will guide feeding and monitoring afterwards; any nutritional support during recovery is supportive only and on veterinary advice.
Frequently asked questions
How much xylitol is dangerous to dogs?
Relatively small amounts can cause a dangerous drop in blood sugar, and larger amounts can harm the liver. Because products vary, always call your vet with the amount and your dog's weight.
How quickly does xylitol affect dogs?
Blood sugar can fall within minutes to about an hour. That speed is why xylitol ingestion is always treated as an immediate emergency.
Which products contain xylitol?
Sugar-free gum and mints, some sweets, certain peanut butters, baked goods, and some dental and medicine products. It may be listed as xylitol, birch sugar, or E967.
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Sources & standards
Emergency guidance follows AVMA, Merck Veterinary Manual, ASPCA Animal Poison Control, and small-animal emergency-medicine standards, reviewed by our veterinary advisory board.