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🍽️Foods & Diet10 min read

Xylitol Poisoning in Dogs and Cats: The Hidden Danger in Sugar-Free Products

Dr. Kamala Freeman
Dr. Kamala FreemanDVM, DABVT

Published June 22, 2025

While some foods may be safe for us, they are not always safe for our pets. Xylitol is among the most common ingredients that can be a serious concern if ingested by pets. Experts estimate Xylitol is approximately 100 times more toxic to dogs than chocolate.

Critical Warning: Even a tiny amount of xylitol found in a single piece of sugar-free gum can cause hypoglycemia or low blood sugar in dogs. Larger amounts can cause liver failure and death.

What is Xylitol?

Xylitol is a sugar alcohol used as a sweetener in sugar-free beverages, candies, and chewing gums. It's made from birch trees or a vegetable fiber called Xylan. Natural sources of xylitol include lettuce, berries, plums, mushrooms, and hardwood fruits and trees.

This sweetener is found in a surprising variety of products:

  • Chewing gum (most common source of pet poisoning)
  • Sugar-free candy and mints
  • Toothpaste and mouthwash
  • Peanut butter (many brands!)
  • Baked goods and baking mixes
  • Breath fresheners
  • Nasal sprays
  • Vitamins and supplements

Xylitol: Safe for Humans

Xylitol is very safe for humans and actually has some health benefits:

  • Dental health: Unlike sugar, xylitol doesn't contribute to tooth decay. In fact, it reduces tooth decay by 30% to 85%
  • Low glycemic: Suitable for diabetics and low-carb diets as it doesn't raise blood sugar levels
  • Fewer calories: Contains 40% fewer calories than regular sugar

None of the adverse side effects of sugar are present in xylitol for humans. However, this is precisely why it's so dangerous - products we consider "healthy" alternatives may be deadly to our pets.

Xylitol: Extremely Toxic to Dogs

While xylitol has its recognized place in people's everyday lives, it can be disastrous for animals. Here's why:

The Science: Dogs' bodies mistake xylitol for glucose, causing the pancreas to rapidly release insulin. This leads to a dangerous drop in blood sugar (hypoglycemia) that can occur within 15-30 minutes of ingestion.

How Toxic Is It?

Dog Weight Hypoglycemia Dose Liver Toxicity Dose
10 lbs (4.5 kg) ~1 piece of gum ~4-5 pieces of gum
20 lbs (9 kg) ~2 pieces of gum ~9 pieces of gum
45 lbs (20 kg) ~4-5 pieces of gum ~18-20 pieces of gum

Note: Xylitol content varies significantly between products. Some gums contain much more xylitol than others.

Symptoms of Xylitol Poisoning

If you suspect your pet has consumed xylitol, watch for these symptoms:

Early Symptoms (within 30 minutes)

  • Vomiting
  • Weakness and lethargy
  • Loss of coordination / difficulty walking
  • Tremors or shakiness

Severe Symptoms

  • Seizures
  • Collapse
  • Coma

Delayed Symptoms (12-24+ hours - liver damage)

  • Jaundice (yellowing of skin/eyes)
  • Dark or bloody stool
  • Bleeding disorders
Time is Critical: Dogs usually develop symptoms within 30 minutes of ingesting xylitol, although they can take up to 12 hours. If the incident occurs while the animal is alone, the unattended toxicity could be fatal.

Xylitol Toxicity: Dogs vs. Cats

In Dogs

Xylitol is exceptionally toxic to dogs. A small amount leads to:

  • Rapid insulin release causing dangerous blood sugar drops
  • Seizures
  • Liver failure
  • Death (if untreated)

In Cats

Small amounts of xylitol in cats can bring about an "impulsive" release of insulin, leading to hypoglycemia (low blood sugar). Cats may be able to survive exposure, but liver failure is common. However, due to their pickier eating habits, cats rarely choose candy or baked goods, making poisoning less common.

If you believe your cat consumed something containing xylitol, seek immediate veterinary attention as this condition may result in seizures and possibly a coma.

Products That May Contain Xylitol

These are the most common culprits for pet poisoning:

  1. Chewing gum - #1 cause of xylitol poisoning in dogs
  2. Sugar-free candy and mints
  3. Peanut butter - many brands use xylitol!
  4. Toothpaste and mouthwash
  5. Baked goods (cookies, muffins, cakes)
  6. Jam, jelly, and pudding
  7. Fruit drinks
  8. Cereal
  9. Vitamins and chewable supplements

What To Do If Your Pet Eats Xylitol

  1. Check the Ingredient Label

    Confirm the product contains xylitol. Try to determine how much your pet consumed.

  2. Contact a Veterinarian Immediately

    Call your vet, emergency animal hospital, or Animal Poison Control Center right away.

  3. Do NOT Induce Vomiting

    Unless specifically directed by a veterinarian. This could cause more harm.

  4. Gather Information

    Know your pet's weight and bring the product packaging to the vet.

  5. Act Fast

    Even if your pet seems normal, call poison control - the amount ingested may still be dangerous.

How Xylitol Poisoning Is Treated

First and aggressive treatment by a vet is necessary to reverse the harmful effects of xylitol:

  • IV fluids with dextrose (sugar) to stabilize blood pressure and blood sugar
  • Blood work to assess overall health and blood sugar levels
  • Induced vomiting (if recent and directed by vet) to prevent further absorption
  • Extended hospitalization with blood glucose monitoring for up to 48 hours
  • Liver protectants and potassium supplementation
  • Follow-up appointments with liver enzyme blood work to check for long-term damage

This is particularly important if your pet is over 8 years old, as they may be more susceptible to liver damage.

How to Keep Your Pet Safe

Prevention is the best approach to xylitol poisoning:

  • Always check ingredient labels when purchasing new items
  • Keep products in closed cabinets - never within reach of pets
  • Don't leave purses or backpacks on the floor - dogs love to explore!
  • Take medications behind closed doors so dropped pills don't reach your pet
  • Don't let pets eat anything off the ground during walks
  • Educate family members and guests about xylitol dangers
  • Choose xylitol-free peanut butter - look for brands with only peanuts and salt
Tip: Consider avoiding xylitol-containing products in your home entirely if you have a mischievous pup or a pet that has a habit of getting into things.

Emergency Contacts

🇺🇸 United States

ASPCA Animal Poison Control: (888) 426-4435

Pet Poison Helpline: (855) 764-7661

Note: Consultation fees may apply ($75-95)

What About Other Pets?

Even though the toxicity of xylitol in other species is not well-documented, there is concern that other non-primate species may react similarly to dogs and cats. This includes:

  • Ferrets
  • Guinea pigs
  • Hamsters
  • Rabbits

Until more research is available, it's best to keep all xylitol-containing products away from all pets.

Conclusion

Xylitol is one of the most dangerous substances your dog can encounter, and it's hiding in products you might never suspect. The key to keeping your pet safe is vigilance: always read ingredient labels, store products securely, and act immediately if you suspect exposure.

Remember: with xylitol poisoning, time is critical. If you suspect your pet has ingested any amount of xylitol, contact your veterinarian or poison control immediately - even if they seem fine. Early intervention can be the difference between life and death.

Download the ToxiPets app to instantly scan any product and check if it contains xylitol or other ingredients dangerous to your pets.

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Frequently Asked Questions

Is xylitol toxic to dogs?
Yes, xylitol is extremely toxic to dogs. Experts estimate it's approximately 100 times more toxic than chocolate. Even small amounts found in a single piece of sugar-free gum can cause hypoglycemia (low blood sugar), and larger amounts can cause liver failure and death.
Is xylitol toxic to cats?
Yes, xylitol can cause hypoglycemia and liver failure in cats similar to dogs. However, cats are less commonly affected because they're pickier eaters and rarely choose candy or baked goods. If your cat ingests xylitol, seek immediate veterinary care.
What products contain xylitol?
Xylitol is found in sugar-free gum, candy, mints, toothpaste, mouthwash, some peanut butter brands, baked goods, jam, jelly, fruit drinks, cereals, vitamins, and chewable supplements. Always check ingredient labels before sharing any food with pets.
How much xylitol is toxic to dogs?
As little as 0.1g/kg of body weight can cause hypoglycemia in dogs. For a 20kg (44lb) dog, just 2 pieces of xylitol-containing gum can cause low blood sugar, while 9 pieces could cause liver toxicity. The amount of xylitol varies widely between products.
What are the symptoms of xylitol poisoning in dogs?
Symptoms include vomiting, weakness, loss of coordination, difficulty walking, lethargy, tremors, seizures, and collapse. Symptoms typically appear within 30 minutes but can take up to 12 hours. Liver failure symptoms may develop 12-24 hours after ingestion.
What should I do if my dog eats xylitol?
Contact your veterinarian or Animal Poison Control Center immediately. Do NOT induce vomiting unless directed by a vet. Try to determine how much was eaten and bring any product packaging to the vet. Time is critical - immediate treatment greatly improves outcomes.
Can dogs recover from xylitol poisoning?
Yes, with prompt treatment, dogs can recover from xylitol poisoning. Treatment includes IV fluids, dextrose to stabilize blood sugar, liver protectants, and up to 48 hours of hospitalization with blood glucose monitoring. Early intervention is key to preventing liver damage.
Does peanut butter contain xylitol?
Some peanut butter brands do contain xylitol as a sweetener. Always check the ingredient list before giving peanut butter to your dog. Look for brands with only peanuts (and salt) as ingredients, or those specifically labeled as pet-safe.
Dr. Kamala Freeman

Dr. Kamala Freeman

DVM, DABVTBoard-Certified Veterinary Toxicologist

Dr. Kamala Freeman is a board-certified veterinary toxicologist with over 15 years of experience in pet poison control and plant toxicity research.

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