Can cats eat Xylitol?
No. Xylitol is a sugar-free sweetener that causes dangerous blood sugar crashes and liver damage. Cats appear less sensitive than dogs, but exposure is still considered dangerous.
If your cat has just eaten xylitol
- Check the label — confirm xylitol is on the ingredients. It may also be listed as 'birch sugar' or E967.
- Call your vet immediately.
- If you can't reach your vet, call Animal PoisonLine (01202 509000) — paid triage, 24/7.
- Don't give sugary food at home unless instructed — your vet may advise managing blood sugar en route.
What's the full picture?
Xylitol is a sugar-substitute found in sugar-free gum, mints, peanut butter brands, some baked goods, sugar-free sweets, protein bars, and even some toothpastes. In dogs, it triggers a rapid insulin release, crashing blood sugar and causing liver damage; the feline response is less well-characterised but case reports exist of hypoglycaemia and liver injury in cats.
Cats are generally less interested in sweet foods (they lack sweet taste receptors), so xylitol exposures are rarer. But they do happen — chewing a discarded piece of gum, licking peanut butter off a spoon, stealing a sugar-free sweet.
Always check peanut butter labels before giving any to a cat: some UK brands (particularly 'no added sugar' products) contain xylitol.
Xylitol toxicity in cats is less well-characterised than in dogs but is included in International Cat Care clinical updates as a recognised hazard. UK-specific concern has increased with the rise in xylitol-containing chewing gum, 'no added sugar' peanut butter, and natural toothpastes in the UK market.
Symptoms to watch for
Hidden sources you might not think of
- Sugar-free chewing gum (Extra, Orbit, Mentos)
- Sugar-free mints and sweets
- 'No added sugar' peanut butter — always check the label
- Sugar-free baked goods and protein bars
- Some toothpastes (never use human toothpaste on a cat)
- Sugar-free cordials and squashes
Safer alternatives
- Xylitol-free peanut butter in tiny amounts
- Cat-safe freeze-dried meat treats
Questions owners ask
Is xylitol definitely toxic to cats?
The evidence in cats is less strong than in dogs, but veterinary toxicologists treat it as a genuine risk. Don't use 'less evidence' as reassurance — assume it's dangerous.
What peanut butter is safe for cats?
A tiny amount of xylitol-free peanut butter is usually fine for cats, but peanut butter isn't an ideal treat — the high fat content can cause pancreatitis. Check the label and limit to occasional tiny amounts.
Related
About this guidance
Every entry on this site is compiled from published UK veterinary toxicology sources — International Cat Care, Veterinary Poisons Information Service (VPIS) references, RCVS-registered practice materials, and peer-reviewed feline medicine literature. Where the evidence is mixed, we err on the cautious side because cats are unusually sensitive to many common substances that are harmless to humans and even to dogs.
This is general information written for UK cat owners. It is not personalised veterinary advice for your specific cat, their age, weight, medical history, or the exact exposure you're dealing with. If your cat has eaten something or is unwell, call your vet first. The Animal PoisonLine on 01202 509000 is available 24/7 for a small fee and can tell you whether an emergency visit is needed.
Entries are reviewed and updated as new research emerges. Spotted an error? Let us know — corrections are investigated and applied within 24 hours. For more context on how we work, see about and our full disclaimer.
Last reviewed: · By the What Can My Cat Eat? editorial team