犬のキシリトール中毒：日常製品に潜む危険
キシリトールは無糖製品に含まれる甘味料で、犬にとって非常に有毒です。どの製品にキシリトールが含まれているか、摂取した場合の対処法を学びましょう。
Xylitol is a sugar alcohol used as a sweetener in thousands of products — sugar-free gum, candy, baked goods, toothpaste, mouthwash, and even some peanut butter brands. While harmless to humans, xylitol is extremely toxic to dogs. In dogs, xylitol causes a massive release of insulin, leading to life-threatening low blood sugar within 10-60 minutes, and can cause fatal liver failure within 12-48 hours. As xylitol appears in more products, the risk to dogs continues to grow.
- Xylitol can be LETHAL to dogs — as little as 0.1g per kg body weight causes low blood sugar
- Doses above 0.5g per kg body weight can cause fatal liver failure
- One piece of sugar-free gum can contain 0.3-1.0g of xylitol — dangerous for a small dog
- Symptoms appear within 10-60 minutes: vomiting, weakness, collapse, seizures
- Always check ingredient labels — xylitol is increasingly hidden in unexpected products
- If your dog ingests xylitol, go to the vet IMMEDIATELY — do not wait for symptoms
Why Xylitol Is So Dangerous for Dogs
In humans, xylitol is absorbed slowly and has minimal effect on blood sugar. In dogs, xylitol is absorbed rapidly and triggers a massive release of insulin from the pancreas — 3-7 times more insulin than normal. This causes blood glucose to plummet to dangerous levels within 10-60 minutes. At higher doses, xylitol directly damages the liver, causing cell death (hepatic necrosis) and liver failure within 12-48 hours. The exact mechanism of liver toxicity is not fully understood but may involve depletion of ATP (cellular energy) and increased oxidative stress.
Products That Contain Xylitol
Sugar-free gum and mints (most common source of poisoning — Ice Trident, Orbit, Extra, and many others), sugar-free candy and chocolate, some peanut butter brands (check labels carefully — some 'natural' brands now add xylitol), sugar-free baked goods and diet foods, toothpaste and mouthwash (especially children's fluoride toothpaste), some medications and chewable vitamins, sugar-free syrup, honey alternatives, and some protein bars. The danger is that xylitol appears in products owners don't expect — always check the ingredients list.
What Happens After Ingestion
Phase 1 (10-60 minutes): vomiting, weakness, loss of coordination (ataxia), trembling, collapse. Blood sugar drops dangerously low. Without treatment, seizures, coma, and death can occur. Phase 2 (12-48 hours): if the dose was high enough, liver failure develops. Signs include jaundice (yellow gums and eyes), continued vomiting, bloody diarrhea, and blood clotting problems. Liver failure from xylitol has a poor prognosis — even with aggressive treatment, some dogs do not survive.
Emergency Treatment
If your dog ate xylitol within the past 30 minutes and is not yet showing symptoms, your vet may induce vomiting. However, xylitol is absorbed so rapidly that vomiting may not be effective if more than 30 minutes have passed. Immediate treatment: IV dextrose (sugar) to counteract low blood sugar, frequent blood glucose monitoring, liver protectants (SAMe, milk thistle), IV fluid therapy, blood clotting monitoring, and hospitalization for 24-72 hours for high-dose exposures. Prognosis depends on the dose ingested and how quickly treatment begins.
- Your dog has eaten any product containing xylitol — even if they seem fine
- Your dog is vomiting, weak, or stumbling after getting into sugar-free products
- Your dog ate sugar-free gum, candy, or peanut butter and you cannot verify ingredients
- Your dog is having seizures or has collapsed suddenly
- You notice yellow gums or eyes in your dog after potential xylitol exposure
- Your dog ate any amount of sugar-free gum — even one piece can be dangerous for small dogs
RVC
Royal Veterinary Center provides 24/7 emergency treatment for xylitol poisoning including immediate IV dextrose therapy, continuous blood glucose monitoring, liver protectant protocols, clotting assessments, and intensive care. Time is critical — call us immediately if your dog ingests xylitol. Bring the product packaging so we can calculate the dose. Call +853 6677 6611.
+853 6677 6611