Is Eucalyptus oil dangerous for cats?
No. Eucalyptus oil is toxic to cats. It's in many cold/flu rubs (Vicks), decongestant oils, and cleaning products.
If your cat has just eaten eucalyptus oil
- Move cat to fresh air.
- Wash any oil from fur with mild soap.
- Call your vet.
What's the full picture?
Eucalyptus essential oil โ used in vapour rubs (Vicks), decongestant diffusers, and 'natural' cleaning products โ contains cineole and other terpenes that cats cannot metabolise.
Even a single lick of concentrated oil, or prolonged diffuser exposure, can cause drooling, weakness, and breathing difficulty within hours.
Common UK exposure sources include Vicks VapoRub (often applied to children and accessible to cats), eucalyptus in shower products, and bedroom diffusers used for colds. Keep these out of rooms your cat sleeps in.
Symptoms to watch for
Related
About this guidance
Every entry on this site is compiled from published UK veterinary toxicology sources โ 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 โ corrections are investigated and applied within 24 hours. For more context on how we work, see about and our full disclaimer.
Last reviewed: ยท By the What Can My Cat Eat? editorial team