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Can Cats Eat Melatonin? Vet Recommendations & Facts

Written by: Misty Layne

Last Updated on January 12, 2024 by Catster Editorial Team

Can Cats Eat melatonin

Can Cats Eat Melatonin? Vet Recommendations & Facts


Dr. Nia Perkins Photo


Dr. Nia Perkins

Vet, DVM

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

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If you regularly have insomnia, chances are you’re familiar with the supplement melatonin. Melatonin is widely used for insomnia because it’s effective (and necessary) for regulating one’s sleep cycle. As a cat parent, you may have wondered if your cat can safely take melatonin as well. Or what happens if you leave your melatonin out and your cat gets into it?

So, can cats eat melatonin, and is it healthy for them? It turns out cats can safely consume melatonin, but only as directed. Research is still being done, but there is evidence that melatonin may also offer some health benefits to them! Here’s everything you should know about cats and melatonin.


What Is Melatonin?

Melatonin is a hormone found in the body that is produced by the pineal gland. When functioning normally, it is released at night to help indicate to the body that it’s time to sleep. It plays an essential role in the sleep-wake cycle. And because it’s a naturally occurring hormone, many people find it preferable to use it as a sleep aid rather than medications such as Ambien.

In humans, melatonin can help with insomnia, jet lag, and other sleep disorders. It may also be beneficial in aiding Alzheimer’s, depression, epilepsy, and anxiety.

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Can Cats Eat Melatonin?

Melatonin occurs naturally within the feline body as with the human body. It is safe for your cat to consume when administered at the proper dose and taken as needed. How much to give your cat will vary, so discuss its use and the appropriate dosage with your vet.

You should also be careful with what brands you use, as some melatonin brands formulated for people may have ingredients that won’t agree with cats. Make sure to speak with your veterinarian to determine which formula is appropriate for your cat.

Scottish Cat with gold eyes takes a pill
Photo Credit: Iryna Imago, Shutterstock

Does Melatonin Have Health Benefits for Cats?

Research is still being done on the effectiveness of oral melatonin for cats. However, there have been some reported health benefits when used appropriately.


It might seem ridiculous to think of cats having sleep issues. After all, sleeping takes up a good chunk of their days! But as cats age, they may start having trouble regulating their sleep-wake cycles, particularly if they also suffer from a cognitive disorder.

Hair Loss

Although melatonin has been used for hair loss more frequently in dogs (and more frequently for dogs, in general), it may also be helpful for cats with hair loss. If your kitty is suffering from hormone-related alopecia, melatonin may assist in the regrowth of their hair.


If your cat is dealing with separation anxiety or anxiety related to something such as a long car ride, melatonin may be the key to keeping them calm due to its sedative effects. Melatonin is likely better for those pets with mild anxiety, not severe. So, if you have a kitty who experiences anxiety occasionally, it could make them feel better.

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Does Melatonin Have Side Effects for Cats?

Studies are limited regarding side effects of melatonin. But if it is being used as directed, they should be uncommon. Some common side effects of melatonin that have been reported include:

  • Extreme sleepiness
  • Itchiness
  • Confusion
  • Stomach upset

Certain medications can also interact with melatonin when used together. These include:

  • Benzos
  • Warfarin
  • Succinylcholine
  • Other supplements, herbs, and vitamins

If your cat has somehow overdosed on melatonin, either via accident or because they got into your stash and ate a ton, you’ll see extreme drowsiness and stomach upset. If this happens, get them to a vet right away.

cat neck pillow
Photo Credit: IRCat, Pixabay

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Final Thoughts

It should be fairly safe for your cat to eat melatonin, provided they consume the proper amount and only as needed. In fact, melatonin may be beneficial to cats in many ways, including regulating sleep, calming anxiety, and helping with hair loss. Just remember to be cautious when it comes to using melatonin if your pet is on other medications or supplements, as they could interact.

The correct dosage for melatonin will vary by pet, so you should check with your vet before administering this supplement to find out how much is needed for your cat. They can let you know if there are interactions with any currently used medications as well.

Finally, be sure you’re using pet-safe melatonin or one recommended by your veterinarian to make sure they are receiving the safest option.

Featured Photo Credit: photo_gonzo, Shutterstock

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