K9 Select Melatonin Peanut Butter Flavor Calming Dog Supplement, 3-mg, 120 count

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At a Glance

  • Vitamins & Minerals
  • Calming
  • Immune Support
  • Made in USA
  • All Lifestages
  • All Breeds
$8.49 First Time Autoship Price
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$16.99 Chewy Price
($0.15 /ea)
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About This Item

Details

  • This supplement offers natural support for your dog’s adrenal glands, reducing excess stress while promoting a healthy hormone balance.
  • Added melatonin helps regulate the sleep-wake cycle to support relaxation and sleep while relieving tension and separation anxiety.
  • Offers anti-inflammatory and antioxidant effects to bolster a strong immune system.
  • This melatonin supplement provides adrenal support and promotes healthy levels of cortisol along with normal thirst and urination.
  • Use it to help your pup relax before fireworks, a party, travel, vet visits, grooming, or leaving the house.

Ingredient Information

Instructions

Frequently bought together

Questions & Answers

2 Customer Questions

How come the details mention milk thistle yet I don't see milk thistle in the ingredients?

What is the fat percentage (max) for this item?

Answer by Chewy • Jul 31, 2024
Since their products do not have any nutritional value in that way we don't test for an exact percentage, but the fat content is negligible. Nothing substantial that would make a difference in a dog's daily diet.
Reviews
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4.3
Rated 4.3 out of 5 stars
142 Ratings
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Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Ease of Use

69% Positive

Effectiveness

67% Positive

Ingredients

74% Positive

Long-Term Benefits

63% Positive

43 Customer Reviews

Rated 5 out of 5 stars
By Jade on Jan 5, 2026

This is a lifesaver!

I have two energetic young dogs that are hard to settle down at bedtime and this is a lifesaver. And, I don't even have to wrap it in cheese, they'll eat it right

I have two energetic young dogs that are hard to settle down at bedtime and this is a lifesaver. And, I don't even have to wrap it in cheese, they'll eat it right out of my hand.

Rated 3 out of 5 stars
By Bev on Dec 2, 2025

3 mg

Was too much for my 60 lb dog and she threw up almost daily until we discontinued use.

Was too much for my 60 lb dog and she threw up almost daily until we discontinued use.

Rated 5 out of 5 stars
By Jamie on May 4, 2025

Calming

Our 11 year old English Shepherd has developed Sun-Downers. In reading about this, which is a form of canine dementia, it was suggested that 6mg of melatonin could

Our 11 year old English Shepherd has developed Sun-Downers. In reading about this, which is a form of canine dementia, it was suggested that 6mg of melatonin could help. It has made a difference in her n out lives for right now. She is resting at night and not pacing the floor.

Rated 5 out of 5 stars
By L on Aug 10, 2025

Can within 13 hours

Chewy is the best! I always receive my order before the projected delivery time.

Chewy is the best! I always receive my order before the projected delivery time.

Rated 5 out of 5 stars
By Guilene on Nov 14, 2025

My dogs loved it and she is very picky about medicine

Works quick and no side effects

Works quick and no side effects

Rated 5 out of 5 stars
By Margaret on Mar 26, 2025

Great Help for Restlessness

This has been wonderful for my older dog that is very restless. My vet recommended this instead of a prescription medication. She takes them easily as a treat

This has been wonderful for my older dog that is very restless. My vet recommended this instead of a prescription medication. She takes them easily as a treat every evening. About 30 minutes after she takes it there is a marked difference in her ability to relax and settle for the night. I definitely recommend this product.

Rated 1 out of 5 stars
By Tammi on May 30, 2025

I WANT MY MONEY BACK

This didn't do anything as far as helping my dogs to rest relax DON'T BUY THIS PRODUCT IT WAS A WASTE OF MY MONEY!!!!

This didn't do anything as far as helping my dogs to rest relax DON'T BUY THIS PRODUCT IT WAS A WASTE OF MY MONEY!!!!

Rated 3 out of 5 stars
By Bruce on Aug 28, 2025

Ineffective

Didn't seem to make any difference

Didn't seem to make any difference

Rated 5 out of 5 stars
By EmMa on Jan 13, 2025

Tiny melatonin tablet but my dog eagerly chews it up.

I was expecting something that looked like a chunk of kibble and was surprised by this tiny tablet that looks more like an aspirin. I could not detect any peanut

I was expecting something that looked like a chunk of kibble and was surprised by this tiny tablet that looks more like an aspirin. I could not detect any peanut butter scent. None the less, my dog is very excited to get them. Then again, she is always over-excited - hence this recommendation from her vet!

Rated 5 out of 5 stars
By Deborah on Aug 27, 2025

It came quick

She eats it with peanutbutter

She eats it with peanutbutter