Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Can Cats Overdose on Catnip? Our Vet Answers

Share

cat eating cat grass

There is nothing quite like the amazing reaction many cats have with catnip. While individual cats’ responses to it can vary greatly, most cats will lick, rub, roll, vocalize, and become very hyperactive while playing with it! It really can make cats crazy! The effects are only short-lived, up to half an hour or so, but it can be a really fun part of interacting with your cat.

Given the intense reactions that are possible with catnip, it is not unreasonable to wonder whether your cat can overdose on it, however, there is no hard evidence that catnip can overdose your cat.  Let’s explore the topic of catnip and answer this in more detail.

divider cat faces oct 2024

What is Catnip?

Catnip is an herb from the mint family with the scientific name Nepeta cataria, and it is found commonly throughout the world. It happily grows in many regions and its extract is then “bottled” and used in lots of cat toys and products. You can grow your own and then dry the leaves, ready to be sprinkled for your cat’s enjoyment!

divider cat faces oct 2024

How Does Catnip Work?

Creates Euphoric Behavior

The active ingredient in catnip is an organic compound called Nepetalactone, which is produced in the plant’s leaves and stems. When a cat inhales this compound, it is thought to activate parts of the nose that normally detect cat pheromones (the “Vomeronasal Organ”). To get the compound into this organ, your cat may inhale while lifting their upper lip, in a behavior called the Flehmen response.

Essentially your cat’s brain interprets catnip as an intense source of cat pheromones, and this triggers the massive euphoric behavioral responses that follow by activating “happy” receptors in the brain. It is thought to be the cat equivalent of an LSD trip, but rest assured catnip is not addictive for your cat! Some sources would also suggest that the pheromone response caused by catnip is similar to a sexual response and so the triggered behaviors may also be sexual in origin!

cat sniffing catnip
Photo Credit: CatCrazy, Pixabay

Reactions Vary

Not all cats react in the same way to catnip—about 30% do not react to it, and this is thought to be based on their genetics. Catnip makes some cats hyperactive, others sleepier and more lethargic, and the duration of the effect is also highly variable—after a while cats become immune to further effects. It is quite normal for cats to be calm and still afterward—almost a “come-down” from the effects of the experience!

Catnip seems to work best in adult cats; kittens and older cats show less of a response. It is thought that kittens only develop the required brain responses and behaviors at about 6 months old. That said, catnip does not harm kittens so it is reasonable to try it with your kitten and see how their responses change over time!

divider cat faces oct 2024

How Should I Use Catnip with My Cat?

Catnip is very useful as a reward for good behavior and can be used to encourage exercise (especially useful in indoor cats). It will also entice your cat to use particular toys such as scratching posts to keep them away from furniture.

The Hepper Hi-Lo Modern Cat Scratcher is a functional and stylish design that makes it the ultimate scratching spot for your cat – and a superhero in the battle against furniture destruction. Unlike most cat toys that end up being ignored, this one's a crowd-pleaser for both cats and their hoomans.

Hepper Hi-Lo Cardboard Cat Scratcher with Real...
  • Premium Materials - Hepper's cardboard scratcher is made with dense, B-flute cardboard, and a metal...
  • High, Low and Lower - A single cat scratch pad won't keep your cat engaged. 3 unique positions keeps...
  • Activates Muscles - The Hi Lo isn't just a cat nail file to stop the chief cat couch scratcher. The...

With its 3 configurations, thick textured cardboard, and solid birch plywood frame, it encourages your cat's natural scratching instincts, so they stay away from your precious furniture, rugs, and curtains, among all other things they shouldn't scratch. The Hi-Lo is like your home's mini guardian, keeping it safe while looking super sleek and trendy.

At Catster, we’ve admired Hepper for many years, and decided to take a controlling ownership interest, so that we could benefit from the outstanding designs of this cool cat company!

If catnip has a calming effect on your cat, it can be great to reduce stress, for example in cat carriers and during travel.

Does Catnip Affect Humans?

The parts of our nose and brain that detect pheromones are not as powerful as they are in cats. This means the pheromone-based behavioral effects of catnip are not seen in people. However, some people do consider catnip a useful alternative medicine for various medical purposes and it is reported to have quite a range of effects on humans. At the very least, it can make a soothing tea!

divider cat faces oct 2024

Can I Give My Cat Too Much Catnip? Can My Cat Overdose on Catnip?

Fortunately, there is no evidence that catnip is harmful to cats in any quantity. Cats are good at self-regulating and stopping themselves from becoming over-stimulated. They seem to become immune to the effects after a short period and if catnip is used a lot, cats will become less and less responsive to it over time. These would seem to be natural limitations on the effects of catnip.

The brain and nervous system in many species are very good at protecting themselves from inappropriate or excessive stimuli by slowly reducing their responses over time, and this seems to happen with catnip too. Catnip is, therefore, best used in moderation and as a special treat only every so often, to ensure your cat gets the best effects from it.

Cats typically suffer no ill effects from eating catnip but will not get the same behavioral responses from eating it – for these, the scent must be inhaled into the vomeronasal organ. If your cat eats an exceptionally large amount of catnip, it may produce a minor tummy upset with some vomiting and diarrhea, but this is not common. Although treatment is likely to be unnecessary, do contact your local veterinary clinic if you are concerned about your cat.

divider cat faces oct 2024

Conclusion

Catnip is a common herb that produces compounds that act as artificial cat pheromones when inhaled and activate various “happy” parts of the brain. These chemical triggers produce the marvelous hyperactive, playful, or sleepy responses that different cats have – although some 30% of cats do not respond to catnip.

The good news is that catnip is not harmful to your cat and cats cannot overdose on it. Cats are good at self-regulating and will remove themselves from the experience after a while, becoming immune to the effects after 15–30 minutes. Cats will also gradually lose the ability to respond to catnip if they are exposed to it too regularly—for these reasons using catnip in moderation and only every so often is best.

Catnip is a very useful part of your interactions with your cat, encouraging play, exercise, and the use of particular toys! The best bit is that you can grow it yourself!


Featured Image Credit: Olga_Malinina, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Life Through Minnie’s Eyes: The Cat Behind the Comics

I used to volunteer at a small local cat shelter called Little Flower Rescue. I had actually met another cat, Sylvia, whom I...

The Original Space Invaders – Why Zero Respect for Personal Boundaries Is a Good Thing

Cats have a reputation for being independent, and in many ways they are. But anyone who has tried to work at a laptop...

How Cats Are Helping to Cure Cancer

When most people think about medical breakthroughs, they picture scientists in laboratories and clinical trials involving human patients. Few would imagine that the...

Ask Dr. Paola – My Cat Loves Eating Grass, But It Makes Her Vomit! (June 29, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

What Breed Is My Tabby Cat? How To Tell, Types & Helpful Tools

Tabby cats have been around for centuries, going back to ancient Egypt and likely further. Where many people get confused, however, is thinking...

Estate Planning For Pets: Can You Put Your Cats In Your Will?

Talking about subjects like estate planning is often uncomfortable. It’s hard to think of a day without your pet, let alone you being...

6 DIY Cat Popsicle Recipes (Vet-Approved)

Popsicles are tasty treats, but they’re usually not safe for cats to eat because they can contain added sugar, artificial colors, and other...

How Do Cat Claws Work? How They Come Out & Retract

Cats are creatures of mystery and mischief, so much so that even their anatomy is fascinating. But no part of a cat’s body...

Keep reading

Can Two Male Cats Get Along? Interesting Facts & FAQ

Cats can be kept in pairs or groups in a multi-cat household. If you have one cat and are tempted to get another, it’s difficult to predict if your current cat will accept a new one. Felines are socially flexible,...

Can Two Male Cats Get Along

What Is Cat Middening? Vet-Reviewed Causes, Prevention & FAQ

Life is always interesting when you have a cat in your life. But one of the more trying issues for cat parents is when your cat urinates and/or defecates outside the litter box. When a cat poops outside of their...

cat-pooping-outside-the-litter-box

Feline Leukemia Day 2026: What It Is & How To Participate (Vet Verified)

There are many wonderful pet holidays every year, such as Walk Your Pet Day and Cuddly Kitten Day. These holidays can be fun and help us bond with our pets. However, few of these holidays are as important as Feline...

vet checking up a cat

Cat Toothache Pain: Vet-Reviewed Signs & How to Help

Did you know that February is Pet Dental Health Month? It’s true, and though this facet of our pet’s care is often forgotten about, it is very essential. Just as with humans, your cat’s dental health can affect their entire...

vet checking cats teeth

Are Hyacinths Poisonous to Cats? Vet-Approved Safety Guide

Hyacinths are beautiful, colorful plants that bloom once a year in mid-spring. They are known as “nature’s perfume” because of the intoxicating smell they emit, and they add plenty of color to any landscape. These plants bloom in an array...

Catster_Are Hyacinths Poisonous to Cats

Laser Declawing Your Cat – Vet-Reviewed Facts & Considerations

Veterinary professionals and reputable veterinary and animal welfare organizations, such as the American Veterinary Medical Association and the American Society for the Prevention of Cruelty to Animals, have released statements against cat declawing if done for the purpose of managing...

paw with long and sharp claws_RJ22_shutterstock

Are Money Trees Toxic to Cats? Vet-Reviewed Houseplants Examined

Money trees are great beginner houseplants thanks to them being easy to care for, not to mention their exotic, tropical look. Cat owners, however, have more to worry about, as pet parents have to be sure a houseplant won’t harm...

Catster_Are Money Trees Toxic to Cats

How to Put a Cat on a Diet: How, Why & 4 Vet-Approved Steps to Follow

As you may or may not know, cat obesity is a problem in the United States, so much so that up to 63% of cats are deemed overweight 1. If you have an overweight cat, helping your cat shed that...

grey domestic hungry cat

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.