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, diarrhea, and lethargy.
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, diarrhea, and lethargy.
- Note how much was eaten and when; provide fresh water.
- If you can't reach a vet, call the ASPCA Poison Control on (888) 426-4435.
What's the full picture?
Aloe vera is toxic to cats despite its widespread reputation as a healing plant. The toxic components are anthraquinone glycosides (primarily aloin and emodin) found in the latex layer of the leaf — the yellowish sap just beneath the green outer skin. These compounds cause GI irritation, vomiting, diarrhea, and in larger amounts, lethargy and loss of muscle tone.
The clear gel inside the aloe leaf (the part used in commercial products) contains less aloin than the latex, but commercial aloe products vary widely in processing — some remove the latex thoroughly, others don't. For cats, treat the whole plant as toxic rather than trying to determine which part of a leaf they ingested.
Aloe vera plants are extremely common household plants — they're sold in almost every garden center and grocery store, are easy to grow, and have an attractive appearance. Many cat owners don't realize they're toxic because aloe is so widely marketed as a health product. The 'natural and healing' association doesn't extend to cats.
The gel in commercial aloe products (lotions, sunscreens, after-sun creams) poses a different risk profile. The concentration of anthraquinones in cosmetic products is typically much lower than in the raw plant, but these products usually contain additional ingredients — fragrances, alcohols, preservatives — that can be irritating or toxic if licked. Keep skin care products away from cats.
If your cat has chewed an aloe vera leaf, call your vet or ASPCA Poison Control at (888) 426-4435. The typical symptoms — vomiting and diarrhea — usually resolve within 24 hours with supportive care, but a vet call is warranted to assess whether the amount ingested warrants more active treatment.
Symptoms to watch for
Emergency vet treatment for poisoning typically costs $800–$3,000 in the US. Pet insurance covers it — and you can get a quote in under 2 minutes.
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Cat Owner Essentials
Questions owners ask
My cat chewed on my aloe plant. How serious is it?
Aloe vera is toxic to cats — it contains anthraquinone glycosides that cause vomiting and diarrhea. Call your vet or ASPCA Poison Control at (888) 426-4435. For a small nibble, expect GI symptoms that resolve within 24 hours. For a larger ingestion, your vet may recommend decontamination.
Is aloe vera gel from a bottle safe if my cat licks it?
Commercial aloe gel has lower concentrations of toxic compounds than the raw plant, but it's not safe. The product likely contains fragrances, alcohols, or other additives that are irritating or toxic to cats. If your cat licks a significant amount from a bottle, call your vet.
Can I use aloe vera on my cat's skin irritation?
No — don't apply aloe vera products to cats. Cats groom themselves and will inevitably ingest whatever you apply. Use vet-recommended topical treatments for skin conditions. Your vet can prescribe appropriate cat-safe options.
If you love the look but not the risk, pet-safe artificial plants are indistinguishable on a shelf and completely nibble-proof.
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About this guidance
Every entry on this site is compiled from published US veterinary toxicology sources — AAFP, ASPCA Animal Poison Control Center (ASPCA APCC) references, AVMA-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 US 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 ASPCA Poison Control on (888) 426-4435 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 Cat Ate It editorial team