Are Valerian root toxic to cats?
Yes. Valerian root (Valeriana officinalis) affects cats similarly to catnip — many get euphoric and playful. It's non-toxic in the amounts cats usually ingest and is a common catnip alternative in UK pet toys.
Key facts
- Verdict: Yes — generally safe for cats in the context described below.
- Category: Catnip alternative
What's the full picture?
Valerian root contains actinidine and related compounds that bind to the same receptors nepetalactone (the active compound in catnip) does, which is why many cats respond to valerian with the same rolling, rubbing, chasing behaviour they show around catnip. Not every cat reacts — sensitivity to both catnip and valerian is genetically determined, and kittens under about three months typically don't respond at all. Where catnip usually has a calming, mellowing effect, valerian tends to be more stimulating, making it a popular choice for waking up an under-stimulated or older cat that's stopped responding to catnip.
In UK pet shops, valerian shows up as dried root sprinkled into toys, valerian-infused scratching posts, and sprays, marketed specifically as a catnip alternative for cats that don't respond to nepetalactone. This is the form worth sticking to — it's been prepared and dosed for cats, and the amounts a cat actually ingests through sniffing, licking, or chewing a toy are small and self-limiting, since most cats lose interest or become sated after a burst of excited play.
Human valerian supplements, sold as sleep aids in tablet or capsule form, are a different matter and shouldn't be given to cats. These are compressed with binders, coatings, and sometimes additional active ingredients like melatonin, hops, or passionflower extract that aren't necessarily safe for cats and haven't been dosed with a cat's body weight in mind. If you want to offer valerian, use plain dried root or a pet-specific product rather than reaching for your own supplement bottle.
A freshly cut or bruised valerian plant has a strong, musky smell — often described as similar to dirty socks or damp earth — that most people find unpleasant but that seems to be exactly what triggers the reaction in cats. If you grow valerian in a UK garden, don't be surprised to find your cat rolling in it or chewing the stems; this is the expected, harmless response rather than a sign of distress.
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Questions owners ask
Can all cats respond to valerian, or just some?
Only some — sensitivity is inherited, similar to catnip sensitivity, and roughly a third of cats show no reaction at all. Kittens under about three months old typically don't respond regardless of sensitivity, as the response develops with age.
Is valerian addictive or harmful with frequent use?
No, there's no evidence of dependency or harm from repeated exposure to valerian in the amounts found in cat toys and sprays. Most cats have a burst of intense interest followed by disinterest, and the response returns after a break rather than building tolerance.
Can I give my cat human valerian sleep tablets?
No — stick to plain dried valerian root or pet-specific toys and sprays. Human supplement tablets often contain other active ingredients and binders not formulated or safe for a cat's much smaller body weight.
My cat ate a chunk of a valerian-stuffed toy — should I worry?
A small amount of dried root or stuffing is not toxic and usually passes through without issue, though any large piece of fabric or stuffing swallowed whole carries a mechanical choking or blockage risk unrelated to the valerian itself, so keep an eye on toys with easily chewed-off pieces.
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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