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Home > Ask A Vet > Can Kittens Have Catnip? Vet-Explained Safety Guide

Can Kittens Have Catnip? Vet-Explained Safety Guide

cat sniffing dried catnip

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Dr. Joanna Woodnutt Photo

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Dr. Joanna Woodnutt

Veterinarian, BVM BVS

The information is current and up-to-date in accordance with the latest veterinarian research.

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Catnip, sometimes also called catwort or catmint, is an herb well known—and often well appreciated—by cats and cat lovers. Just as its looks would suggest, catnip is a close relative to plants in the mint family. While it has some relaxing and sedative properties when used in people, its intense effects are perhaps most obvious in our feline friends. This often leads pet parents to wonder whether kittens can have catnip, and how old a cat should be before they can be exposed to it?

Catnip is generally safe to give cats of all ages, though very young kittens may not react to it. Do not give catnip to kittens with seizures or other neurological conditions.


How Does Catnip Work?

The active ingredient in catnip is nepetalactone, which acts as an insect repellant for the plant. When nepetalactone comes into contact with the smell receptors inside a cat’s nose, they cause an endorphin release, with effects quite similar to those of morphine. Studies suggest these effects are most noticeable in about two-thirds of cats, with another third seemingly less, or not, sensitive. This is probably genetic and hereditary. Kittens under the age of 3 months tend to not show much response either.

The effects of nepetalactone usually begin quickly and last for between 5 and 15 minutes. After this, cats develop tolerance and are no longer sensitive for a few hours. This being said, catnip is non-addictive and does not seem to create dependency.

Image By: R. E. Beck, Pixabay

How Do Cats React to Catnip?

Cats sensitive to catnip will usually start sniffing, rolling, licking, chewing, and rubbing their cheeks. Just like opioid drugs, its effects tend to remove inhibitions, and this can manifest in different ways depending on the cat’s personality and behavioral tendencies.

In some cats, the effects of catnip can be more calming, and they might start drooling, purring, and becoming very relaxed and sleepy. In contrast, other cats can become more heightened, playful, vocalizing, and leaping around. In some cases, it can cause certain cats to display anxious or even aggressive behavior, which is a much less desirable effect.

What Are Some of the Different Uses of Catnip?

For cats that seem to enjoy the effects of catnip (remember, not all will!), pet parents report using the herb for:

  • Occasional sensory enrichment and enhanced play.
  • Positive reinforcement, especially to encourage a cat to use a new scratching post, for example, or a new bed.
  • In some instances, reducing anxiety when traveling or settling in a different environment, or becoming familiar with their cat carrier. This will very much depend on the cat’s response, however, as some cats tend to become more wired and anxious, which would be counterproductive here.

Remember, it is best to see how your cat or kitten responds to a small amount of catnip first, before considering using it for other purposes.


Can Kittens Have Catnip?

Medical Considerations

Medically speaking, catnip is a very safe and harmless herb for cats, including kittens, though very young kittens will likely not show any behavioral response to it. It is safe to be eaten in small quantities, and even if a cat goes overboard, this will generally only cause a bit of vomiting and diarrhea.

However, it is best not to give catnip to kittens (or any cat for that matter) with a neurological condition, specifically seizures. It is also probably best to avoid giving it to a group of several kittens at once, or if a young child is around, as it can heighten aggressive or anxious behavior in some cats.

Cat playing with catnip toy
Image By: Ellie Burnett, Shutterstock

Ethical Considerations

Ethically speaking, most people find the effects of catnip to be quite positive for their cat. They might use catnip to enhance play and bonding with their kitten. These pet parents feel that their cat finds the experience quite enjoyable, and therefore do not see any ethical issues in utilizing it as an occasional treat.

This being said, a few people have voiced the opinion that giving a mood-altering substance to a pet should raise some ethical questions. There appears to be no clear consensus on this, so we would suggest that with a clear understanding of how catnip works, perhaps pet parents can weigh both aspects of this debate and decide in an educated manner whether they are morally comfortable using it with their kitten, or not.

How Can I Give Catnip to My Kitten?

Different forms of catnip can be used with kittens. And remember, a little goes a long way!

  • Dried catnip, which can be sprinkled on surfaces, bedding, and scratching devices.
  • Catnip toys are also very popular. You might want to go for the kind you can refill so they keep their appeal over time.
  • Catnip mats.
  • Fresh catnip, which looks a lot like mint, can be grown and harvested at home. Some would argue this is the most natural, and least concentrated form of catnip.
  • Catnip spray, which is usually the most concentrated form of delivering nepetalactone.

Catnip can really enrich your cat's life, especially if you choose a fun, well-built catnip toy. Our favorite option is Hepper's Catnip Stick Toy, which offers sturdy construction, 100% organic catnip fill, and a great range of colors. These toys are handmade in the USA and feature bite-proof double bagging.

Hepper Stick Catnip Cat Kicker Toy
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When Should I Avoid Using Catnip?

Though it is considered safe and harmless in most situations, catnip can be a significant stimulant for some cats, so it is best to avoid using it on cats with a history of seizures, or with other pronounced neurological problems.

Catnip indulgence can also prove to be an issue for cats who might be prone to being aggressive, or tend to be bullies in a group of other cats. For this reason, it is best to also be careful when using it for the first few times when children are around.

Out of an abundance of caution, catnip should also be avoided in pregnant cats, as it has been reported to potentially induce uterine contractions.

What if My Kitten Does Not Seem to Respond to Catnip?

If your kitten is still quite young (under 12 weeks old), it is normal for them not to respond to catnip, as their nervous and olfactory (smelling) system is not yet mature enough.

However, if your kitten is older and doesn’t seem to be responding to catnip, it could simply be that they land in the 20 to 30 percent of cats who aren’t particularly sensitive to the effects of the plant, usually for genetic reasons.

Some of these cats will still be sensitive to other plants with similar effects to catnip, such as valerian root and leaves, silver vine, or Tatarian honeysuckle wood. These contain different active ingredients, which some cats will respond to, even if they don’t respond to catnip.

catnip leaves
Image By: lwccts, Pixabay

Is There Such a Thing as Too Much Catnip for a Kitten?

When it comes to catnip, there can indeed be too much of a good thing. While most cats and their pet parents find it great fun as an occasional treat, too much catnip, or using it too often, can be problematic. Not only can it be over-stimulating, but too much of the plant, be it fresh or dried, can cause vomiting and diarrhea if eaten in excessive amounts.

Though they are very hard to verify objectively, there have also been occasional reports of pet parents feeling like their cat ended up with some personality changes after using catnip repeatedly and frequently. So perhaps, as with most things, common sense would suggest that “easy does it,” and that it is very likely best to use catnip sparingly and occasionally.



Catnip can be a safe recreational plant and a fun way for pet parents to enhance play, well-being, and bonding with their kitten, if they respond to it positively. However, though catnip isn’t toxic per se, pet parents should be mindful not to overdo it. By limiting the amount of catnip used, as well as the frequency, they can ensure catnip stays a fun, safe, and entertaining treat for their little feline friend.

Featured Image Credit: Lightspruch, Shutterstock

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