Xylitol Poisoning In Cats: Causes, Symptoms, & Treatment

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Xylitol is a chemical compound known as a “sugar alcohol.” It is commonly used in human foods and other products as a sweetener (e.g. sugarless gum). It is highly toxic to dogs, causing life-threatening health issues. In the past, there have been some concerns about possible toxicity in cats. The concern about xylitol poisoning in cats is no longer considered valid.

This article aims to explain the background of xylitol poisoning in cats so that cat owners can better understand the issue in more detail.

Quick Overview: Xylitol Poisoning In Cats

clock Urgency: Xylitol is no longer thought to be poisonous to cats, so this is not urgent unless a cat has eaten a very large quantity.
home Home Remedies: Home treatment is not needed.
jam-medical Treatment Options: If a cat eats a very large amount of xylitol, your local emergency veterinarian will advise you on the right course of action. They may wish to induce vomiting, as well as other treatments, depending on the situation.
medical-files Diagnosis: Xylitol poisoning is diagnosed by somebody witnessing the animal ingest foods containing xylitol.
search Common Symptoms: Cats do not normally show any signs of xylitol poisoning as they are not susceptible to this in the same way as dogs because of the different feline metabolism.

What Is Xylitol?

While xylitol is a safe sugar alternative for humans, it is toxic to dogs and used to be thought of as toxic for cats.

Xylitol is used as a sugar substitute in the form of an additive to specific human products. These include drugs, dietary supplements, confectionery/sweets, toothpaste, mouthwash, chewable mints, peanut butter, nasal sprays, medical tablets (such as melatonin), and sugar-free chewing gum. However, it is not commonly used as a separate ingredient in the home.

Xylitol creates a taste that is as sweet as sugar while containing 75% fewer carbohydrates and 40% fewer calories. It is sometimes used as an alternative to sugar for people with diabetes. This is because it does not raise blood glucose or insulin levels in humans.

About Xylitol Poisoning In Cats

There are many articles online about xylitol poisoning in cats. However, more recently, doubt has been cast on this information. It is now considered more likely that xylitol ingestion is not toxic to cats after all. The ASPCA website now states this clearly: “While xylitol consumption can be dangerous for your dog, it does not cause serious problems in cats.” This is good news for cat owners!

In a study in 2018, xylitol was given in large doses orally to six cats (up to 1000mg/kg). Xylitol ingestion caused no significant alterations in blood glucose in cats (other than a mild increase in blood glucose at the highest dose used).

From this study, it seems that cats are not susceptible to the dangerous hypoglycemia (low blood sugar) that is commonly seen in dogs that ingest xylitol. This supports the anecdotal clinical evidence seen by many vets in their practices.

There is an extra, possible concern of liver failure caused by xylitol found in dogs. The cats observed in the 2018 study were found to have normal liver enzymes. It is now considered doubtful that this is a significant concern.

Also Read: Feline Diabetes: Diagnosis, Treatment, and Remission Demystified

​How Xylitol Affects Cats

Cats are curious by nature and may get into things that they shouldn’t.

Xylitol is no longer thought to be toxic to cats. Furthermore, cats are far less likely than dogs to eat products such as sugar-free gum. This means that the risk of ingestion of xylitol is lower for cats in any case.

In dogs, xylitol toxicity causes a severe and dangerous drop in blood glucose by causing a surge in the release of insulin from the pancreas. This then requires prompt emergency veterinary intervention. There is an additional risk of hepatic necrosis (liver damage). Cats do not seem to be vulnerable to these toxic effects of xylitol.

Also Read: Liver Failure In Cats: Causes, Symptoms, & Treatment

​How Much Xylitol Is Poisonous?

While xylitol may not be considered poisonous to cats any longer, it is still a good idea to make sure that they don’t ingest any.

Contrary to previous beliefs, xylitol is not thought to be toxic to cats after moderate levels of ingestion (up to 1000mg/kg).

In dogs, xylitol is rapidly absorbed after ingestion. This results in hypoglycemia (low blood glucose) within half an hour. Doses of an amount of xylitol of over 100 mg/kg can result in hypoglycemia and over 500 mg/kg can result in hepatotoxicity.

Also Read: Why Is My Cat So Desperate For Attention? Top 10 Reasons

​Symptoms Of Xylitol Poisoning In Cats

Hypoglycemia and liver damage are the main causes of concern when pets ingest xylitol.

Cats are not thought to be susceptible to xylitol poisoning in doses up to 1000mg/kg. In contrast, dogs are highly vulnerable to xylitol toxicity at much lower doses.

The main signs of xylitol poisoning in dogs are linked to hypoglycemia (low blood glucose) and liver damage (hepatic necrosis).

Also Read: Are Cats Smarter Than Dogs? Scientists Finally Have the Answer

​Diagnosis Of Xylitol Poisoning In Cats

While cats are no longer considered susceptible to xylitol poisoning, if you feel that your cat could benefit from a veterinary exam after consuming xylitol, there are a number of procedures that you can expect your vet to follow during the visit.

1. Detailed History Taking

Even though cats are no longer considered susceptible to xylitol poisoning, you may still consider going to the vet if your cat consumes large amounts of xylitol, just to be on the safe side.

During your cat’s examination, a vet will discuss every aspect of your cat’s background and overall care. The vet will also take down the details of when, how much, and what type, of xylitol has been consumed by your cat. The amount and type of xylitol that has been eaten will be identified. A local animal poison control center or a pet poison helpline may be contacted as part of this initial discussion to do specific calculations of risk.

Also Read: Drug Poisoning In Cats: Causes, Symptoms, & Treatment

​2. Physical Examination

A thorough examination at the veterinarian may put your mind at ease if you suspect your cat has ingested something toxic.

Your veterinarian will check your cat over carefully, looking for any signs of ill health.

3. Routine Blood Tests

Routine bloodwork for your cat is a common way for a vet to make sure that your cat is healthy.

Your DVM veterinarian may carry out routine blood work. This can include the usual panel of diagnostic tests, such as hematology (blood count) and biochemistry profiles. These tests help to double-check for any damage to internal organs caused by xylitol.

Also Read: Cat Bloodwork (Different Types of Tests, Health Conditions And Costs)

​Treatment Of Xylitol Poisoning In Cats

If you suspect poisoning in your cat, do not hesitate to contact your veterinarian right away for advice.

Induction of emesis (vomiting) or gastric lavage can be an effective way of removing most toxins from the digestive system if it is carried out promptly. Ideally, this time frame should be within an hour of ingestion. Given the more recent understanding of the lack of toxicity of xylitol to cats, this may or may not be recommended by your veterinarian. It all depends on the specifics of the situation.

Activated charcoal may or may not be recommended in an attempt to limit the absorption of xylitol from the digestive tract.

General supportive treatment is important in any possible poisoning situation. This can include IV fluids, digestive tract protectants, and other medication to control any signs that the cat may be showing. This may or may not be suggested by your vet.

Also Read: Digestive Enzymes For Cats: Everything You Need To Know

​Prevention Of Xylitol Poisoning In Cat

As with anything potentially dangerous for pets, xylitol should be stored away from where a curious cat cannot get into it.

Pet owners should store all xylitol safely, out of the reach of pets. Xylitol should never be given to cats, even though recent evidence suggests that it is not toxic to cats, after all.

​Xylitol And Cats: Final Thoughts

Person petting a cat who has been sick

Take care to make sure that your cat is not likely to ingest anything that they shouldn’t be, even if it is thought to be generally non-toxic.

Xylitol is no longer thought to be poisonous to cats. However, if a cat is known to ingest xylitol in very high quantities, prompt action by taking the cat to the emergency clinic is still advised.

Also Read: 15 Human Foods That Are Poisonous & Toxic To Cats

​Frequently Asked Questions

How much xylitol is toxic to cats?

Xylitol is no longer thought to be toxic to cats, but if doses higher than 1000mg/kg body weight are ingested, urgent veterinary advice needs to be sought.

How long does it take for xylitol poisoning to affect cats?

Cats do not show ill effects after ingesting xylitol, as it is no longer thought to be toxic to cats.

What happens if a cat eats xylitol?

Cats do not suffer toxicity after eating xylitol, but if they eat more than 1000mg.kg, there may be a risk of certain issues. In this case, they should be taken to the vet for urgent treatment.

How long does xylitol take to make a dog sick?

Dogs can develop symptoms of hypoglycemia (low blood sugar levels) within a very short time after ingestion of xylitol (e.g. 15 minutes), so they need to be taken to the vet with extreme urgency. Xylitol does not affect cats in this way so this advice does not apply to cats.

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About Dr. Pete Wedderburn, DVM

Dr Pete Wedderburn qualified as a vet from Edinburgh in 1985 and has run his own 4-veterinarian companion animal practice in County Wicklow, Ireland, since 1991. Pete is well known as a media veterinarian with regular national tv, radio and newspaper slots, including a weekly column in the Daily Telegraph since 2007. Pete is known as "Pete the Vet" on his busy Facebook, Instagram and Twitter pages, regularly posting information on topical subjects and real-life cases from his clinic. He also write a regular blog at www.petethevet.com. His latest book: “Pet Subjects”, was published by Aurum Press in 2017.

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