⚠ Gum varies hugely — some pieces have under 0.1 g, others over 1 g of xylitol. This uses a typical estimate, so if a brand is high-xylitol, assume worse.
This is an estimate only, not a diagnosis. Because gum xylitol varies so much, when in doubt treat it as an emergency and call your vet.
Talk to a vet now — from home
Xylitol works fast, so quick advice matters. An online vet can triage in minutes, and pet insurance can cover the emergency visit.
Why xylitol is so dangerous to dogs
Xylitol is a sugar-free sweetener found in gum, mints, candy, some peanut butters, baked goods, toothpaste and supplements. In dogs it tricks the body into releasing a surge of insulin, causing a rapid, dangerous drop in blood sugar — and at higher doses it can cause liver damage. It acts within 15–60 minutes, so speed matters.
Veterinarians measure the risk in milligrams of xylitol per kilogram of body weight:
- Under ~75 mg/kg — lower risk, but still worth a call.
- ~100 mg/kg and up — dangerous blood-sugar drop (hypoglycemia) likely — emergency.
- ~500 mg/kg and up — risk of liver damage — serious emergency.
The hard part is that the xylitol content of sugar-free gum varies enormously between brands. That's why this tool errs on the cautious side — and why, with xylitol, when in doubt you should treat it as an emergency.
What to do if your dog ate xylitol
- Call your vet or a pet poison helpline immediately — do not wait for symptoms.
- Note the product, brand and amount, and when it was eaten.
- Do not induce vomiting unless a professional tells you to.
- Watch for weakness, wobbliness, vomiting, collapse or seizures.
For the full guide, see Can dogs eat xylitol?