Can dogs eat xylitol?
No — xylitol is one of the most acutely toxic common ingredients for dogs. Even one piece of sugar-free gum can cause seizures in a small dog within 30 minutes. Liver failure can follow 24–72 hours later. This is a true emergency.
Xylitol is a sugar substitute in many "sugar-free" products. In dogs (not humans) it triggers massive insulin release, crashing blood sugar. Higher doses also cause acute liver failure. Call your vet immediately — don't wait for symptoms.
Watch out for
- Toxic at very low doses — 0.1g/kg for hypoglycaemia; 0.5g/kg for liver failure.
- One stick of sugar-free gum can contain 0.3–1g of xylitol.
- Hidden sources: sugar-free gum, some "natural" peanut butters, baked goods, human toothpaste, some medicines.
- Symptoms (weakness, staggering, seizures) can appear within 30 minutes.
- Liver damage may appear 24–72 hours later — even if the dog initially seemed fine.
Frequently asked
What peanut butter brands contain xylitol?
Most US mainstream brands are xylitol-free, but formulas change and some "sugar-free" or US imports contain it. Always read the label every single purchase. "Birch sugar", "sugar alcohol", or "xylitol" = unsafe.
My dog ate one piece of gum — is that serious?
Yes. Call your vet immediately. One piece can cause hypoglycaemia in a small dog. Even if your dog seems fine at 30 minutes, liver damage can develop over 24–72 hours.
Is xylitol toxic to cats?
Less data available, but cats appear less affected. Don't feed deliberately; call your vet if accidental exposure happens.
What symptoms should I watch for?
Weakness, staggering (drunk-like appearance), vomiting, collapse, seizures within 30–60 minutes. Later signs (1–3 days): yellow gums, dark stool, lethargy = possible liver failure.
Can I give honey to fix low blood sugar at home?
Not without vet guidance. Absorption is too slow to rescue a dog already seizing, and at-home treatment can delay proper IV dextrose. Get to the vet.
More food guides
Check our toxic-food tool for quick answers, or ask CRO about your specific dog.
This guide is educational and based on US veterinary sources. Individual dogs react differently — introduce any new food slowly, and speak to your vet if your dog has medical conditions like pancreatitis, diabetes, or allergies.