Why do cats love catnip?

17 February 2025 - 3 min read
Ginger cat eating catnip

Most people know cats (usually) love one thing over anything else: catnip.

Cats eat catnip for all sorts of reasons. But not all cats have a positive reaction to it. In fact, the science of how it works and the effects of catnip is a deep topic.

Here, we answer what catnip is, why cats love it and what it does to cats.

MP_Vet_Collar_Cat

Top-quality cat insurance

Purr. Pounce. Ouch.

We protect your cat from any unexpected accidents - even if they always land on their feet.

MP_Vet_Collar_Cat

What's catnip?

A bundle of catnip growing outdoors next to lavender

Catnip is a common herb. It gets its name from, well, driving cats crazy. The science-y name is Nepete Cataria, and it's part of the mint family. You can find them growing in the UK, and you'll usually see them amongst foliage with lavender.

Humans used to boil it in tea to cure coughs, and it's a key ingredient in things like anti-bug repellents. But the main use is for cats.

It's safe in small doses and isn't addictive. But too much catnip can cause distress, with symptoms like diarrhoea, dizziness and vomiting.

Why do cats love catnip?

A grey cat outside eating catnip

The active compound in catnip, nepetalactone, interacts with a cat's brain, causing the cat to feel good.

This compound mimics feline "happy" pheromones. When a cat smells it, it releases these happy signals in the brain, leading to joyful behaviour.

But it's important to remember not all cats like it. 1/3 of cats don't react to it. This is due to genetic factors; some cats don't have the gene that causes catnip reactions.

What does catnip do to cats?

Cats are affected by catnip in a few positive ways. You may notice your cat:

  • Acting more playful, rolling around, rubbing their face or being more open to games

  • Being hyperactive, which can be mistaken for aggression

  • Relax - they may appear dreamy, mellow or zoned out

  • Zoomies

You should factor in catnip use when working out how much to exercise your cat, as they can burn quite a few calories when using it.

How long does catnip last?

Image of a grey-and-white cat lying on a carpet

Catnip usually lasts 10 to 15 minutes, though some cats can feel it for 30 minutes. The length of time depends on your cat, really.

The effects of catnip are always temporary, and once a cat has ingested some, it takes 30 minutes to two hours before they can feel the effects again. Like most psychoactive substances, catnip loses its potency over time.

Your cat's "reset period" depends on their genes and breed.

Differences between fresh vs. dried catnip

Fresh and dried catnip each have their own advantages. The best choice depends on how much your cat likes catnip, your budget and convenience.

Fresh catnip

  • Availability: Fresh catnip is readily available if you grow it yourself - just trim off the leaves and offer them to your cat.

  • Flavour: Fresh catnip has a slightly different flavour, which some cats prefer.

  • Poorer shelf life: The shelf life for fresh catnip is poorer, meaning it may become more costly.

  • Strength: It's generally stronger and more potent than dried.

Dried catnip

  • Convenience: Dried catnip is convenient to store and use, and you don't have to worry about growing and maintaining your own catnip.

  • Easier application: Dried is generally easier to apply, plus you can use them on bedding, scratching posts and toys.

  • Shelf life: Dried has a longer shelf life, and you can store it for a long time.

  • Weaker strength: Dried is not as potent, and the flavour is more bitter, especially if you store it for a long time.

Is catnip bad for cats?

No, catnip isn't bad for cats in moderation. It isn't addictive, and cats can't overdose on it. But if your cat eats too much it can cause problems, like stomach upset.

Catnip isn't addictive since cats will naturally stop when they have enough. Moderation is still key; keep it as an occasional treat. It will lose potency over time, and if your cat has too much, you'll have diarrhoea and vomiting to clean up.

Fun ways to give your cat catnip

Image of a grey cat holding a pouch of catnip. It's using it as a toy and looks content.

We recommend incorporating catnip into your cat's positive reinforcement training or play. Some fun ways to give your cat catnip include:

  • Mixing it in a spray bottle and spraying it around parts of the house

  • Putting a small amount of catnip in water to create a tea

  • Stuffing safe cat toys, like balls, with catnip

  • Sprinkling catnip on a scratching post

There are numerous ways to use catnip but also think about when to use it. It can work really well as part of training sessions, introducing new cats to each other or when travelling with a cat to reduce anxiety.

Stay prepared with cat insurance

Catnip can be a fun addition to your cat's routine. But be sure to moderate it, and don't force your cat to have some if they aren't a fan.

Oh, and remember that our cat insurance can help with unexpected health issues with up to £15,000 vet fee cover, a host of ManyPets Perks and 24/7 access to a professional video appointment through FirstVet.

a kitten dreams of dish

High-quality cat insurance

Insure all nine lives

We know your cat knows best. But let's keep them protected from any unexpected accidents or illnesses - just in case.

a kitten dreams of dish

Ben Newman
Editorial Content Lead

Ben is a writer and editor with years of experience in insurance. After spending a long time creating content for some of Britain's biggest brands as part of a marketing agency, Ben began to focus on insurance and hasn't looked back since. When he's not consuming copious cups of tea, you can find him reading a book, daydreaming about having an Australian Shepherd and shouting at Liverpool on the TV.