Is Aloe vera toxic to cats?
Yes. Despite its skincare reputation, aloe vera is toxic to cats. The gel and outer leaves both cause vomiting, diarrhoea, and lethargy.
Responsible cat owners also keep parasite protection up to date — Best Vet Care ships prescription flea, tick and wormer treatments direct from licensed vets. (affiliate link)
Key facts
- Verdict: No — dangerous to cats. Aloe vera should never be given deliberately.
- Category: Houseplant
- Onset: Signs can start 0–6 hours — see the full timeline below.
- If it's already happened: Call your vet now, or the Animal PoisonLine on 01202 509000 (24/7, charges apply) — see the emergency steps below.
If your cat has just eaten aloe vera
- Move your cat away from the plant and remove any chewed material if safely possible.
- Don't induce vomiting at home.
- Call your vet — aloe vera contains anthraquinones and saponins that cause vomiting, diarrhoea, and lethargy.
- Note how much was eaten and when; provide fresh water.
- If you can't reach a vet, call the Animal PoisonLine on 01202 509000.
What's the full picture?
Aloe vera contains saponins and anthraquinones that cause GI upset in cats. The outer leaf latex is particularly irritating and can cause more severe symptoms than the inner gel.
Topical aloe products (skin creams, shampoos) are also best kept away from cats — they may groom it off their fur.
Symptoms to watch for
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Cat owner essentials
For prescription-strength flea, tick and wormer protection, Best Vet Care ships direct from licensed vets — no vet visit required. (affiliate link)
If your cat keeps returning to the wrong plant, a pet-safe plant deterrent spray can break the habit without harm.
Recommended for cat owners
Related
Sources referenced for this guidance
- Veterinary Poisons Information Service (VPIS) — UK clinical toxicology reference used by vets
- International Cat Care — feline-specific clinical guidance
- BSAVA — British Small Animal Veterinary Association reference materials
- Merck Veterinary Manual — professional veterinary reference
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