Get

In Your Inbox

Dogster 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 Dogs Have Melatonin? Info & Side Effects

dog medicine

Melatonin is a hormone that naturally occurs in the body and is thought to help regulate sleep patterns. Melatonin supplements can help humans get a better night’s sleep, and they have also been shown to treat issues like separation anxiety and stress in dogs. Melatonin has sedative properties, so it can help your dog get a good night’s sleep, too. So, yes, melatonin can be a safe supplement to administer to dogs. Here is what you should know about the supplement and how to use it when giving it to your canine companion.

divider dog faces oct 2024

Reasons to Give Melatonin to Your Dog

Separation and noise anxiety are two extremely common reasons that veterinarians recommend melatonin supplements for dogs. According to the American Kennel Club,1 melatonin supplementation can also be utilized for problems such as cognitive dysfunctions, blindness, and even seasonal alopecia. Some dogs benefit from occasional use, like during a holiday when fireworks are set off. Other dogs benefit from daily use to help with cognitive problems or sleep disruptions.

Side Effects of Melatonin Supplementation in Dogs

Fortunately, there are no serious side effects to worry about when administering melatonin supplements to your dog. Any that do occur are rare and typically short-lived. The most common side effect is drowsiness, which should be expected. Melatonin might interact with other medications your dog is taking, so always check with your vet before giving it to your dog.

Some dogs may also develop an upset stomach, a bit of confusion, or an increased heart rate after taking melatonin—all of which are temporary. However, it is important to note that melatonin supplements have not been approved by the FDA for use in animals, and research is limited when it comes to the effects of melatonin in dogs. Still, most veterinarians consider the supplement to be a safe treatment option for most canines.

owner giving medicine tablet to his sick dog
Image By: Creative Cat Studio, Shutterstock

Melatonin Dosage for Dogs

Melatonin comes in various forms and dosages. There are pills, gummies, and liquid supplements available that are designed just for dogs. You’ll need to figure out what form your dog likes and then determine their dosage based on the reason for the treatment.

Most dogs do well with between 1 and 6 milligrams of melatonin every 24 hours, but it’s best not to guess. Your veterinarian can recommend a dosage based on your dog’s history, health, and the reasons for treatment in the first place. They can also recommend a schedule to follow at home.

Too much melatonin can lead to problems like itchiness, diarrhea, high blood pressure, and even seizures. Therefore, follow your vet’s recommended dosage and administration schedule. Melatonin supplements come in over-the-counter and prescription versions. Your vet may prescribe a product or allow you to choose a commercial one.

Before giving any new medication to your dog, we recommend you consult a veterinarian for the best advice on which would be the best treatment for your pup.

Did you know you can talk to a vet online? Click on the image or button below to schedule a call: PangoVet_Mention-in-Content Savings V1


divider dog faces oct 2024

Final Thoughts

Dogs can benefit from melatonin supplementation in various ways. The type and amount of melatonin that any dog receives should be based on their actual need, not a “guesstimate,” so it’s important to work with your veterinarian before you administer any supplements to your dog.


Featured Image Credit: LightField Studios, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* 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 Dogster 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.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

13 Maltese Pros & Cons: What to Expect When Bringing One Home

The Maltese is a toy breed and among the most popular in the United States. The American Kennel Club ranks them number 37...

11 Miniature Schnauzer Pros & Cons to Know Before You Get One

Bringing home a loving and cuddly little furball is one of those precious moments that every new dog owner has the privilege of...

When is the Best Time to Mate a Dog? Facts & FAQ

If you have a healthy, non-spayed, purebred, and capable female, the idea of breeding might have crossed your mind. You might be looking...

Can Dogs Eat Clam Chowder? Vet-Verified Nutrition Facts & FAQ

If you have prepared a hearty bowl of clam chowder, you will undoubtedly notice your dog’s nostrils flaring and tail wagging at the...

More related

Dog Health Care Routines: 19 Vet-Approved Tips

Your dog is your best friend, and you want your best friend to live as long as possible. That means taking care of...

Ask Dr. Paola- String lights, Polyps & Torn CCL (April 21, 2025)

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

6 Great Off-Leash Dog Parks In The Netherlands You Can Visit Today!

If you’re a pet parent living in the Netherlands, rejoice! We have three awesome off-leash dog parks that will provide your pup with...

Red Nose Pitbull: Info, Pictures, Origin & History

Red Nose Pitbulls are one of two major color variations in the American Pitbull Terrier breed. Red Nose Pitbulls have a more earthy...

Keep reading

Can Dogs Eat Sweet Potato Fries? Vet-Verified Nutrition Facts & Better Options

If you’re coming to this article concerned and ready to call the vet—just know that sweet potato fries aren’t toxic for your dog. However, if they are already made into fries, and you haven’t just cut up a fresh, sweet...

Dogster-Can-Dogs-Eat-Sweet-Potato-Fries

Is Glycerin in Dog Food & Treats Bad for Dogs? Vet-Reviewed Safety Guide

We all know that one key to a healthy dog’s life is high-quality dog food. You look for ingredients such as whole meats and grains and ensure the diet is complete and balanced. You may not be looking for glycerin,...

dry dog food in bowl

Why Does My Dog Eat My Hair? 10 Possible Reasons (Vet-Reviewed)

Ever caught your canine companion munching on your hair and wondered why? It’s not a gourmet meal, after all. This behavior, while strange to us, is anecdotally quite common and can be attributed to various causes. From their inherent grooming...

woman carrying smiling dog

Best Canned Pumpkin for Dogs: Our Top 6 Picks in 2025

Pumpkin isn’t just an autumn treat anymore—especially when it comes to your dog. Canned pumpkin is a popular treat and dog food topper, and many dogs can’t get enough of it! It’s also a healthy superfood that has many benefits...

Dog beside Pumpkin

9 Best Dog Foods for Schnauzers in 2025: Vet-Approved Reviews & Top Picks

The key to having a healthy Schnauzer, like any other dog breed, is to ensure that their diet is 100% balanced and rich in the vitamins and minerals they need to thrive. That said, many Schnauzers are susceptible to pancreatitis...

Gray Schnauzer eating food at natural sunlight

Can Dogs Eat Mahi Mahi? Vet-Reviewed Facts

Providing your dog with the best possible diet is a top priority for all dog owners, but sometimes we may feel like our dogs get bored with the same meals every day. While we are cooking up a storm in...

Can Dogs Eat Mahi Mahi

6 Best Dog Foods for Kidney Disease in 2025 – Reviews & Top Picks

Every dog parent dreads the idea of their dog getting sick, and kidney disease is no joke for dogs. As in the case of humans, this disease is not curable, but manageable. All we can do is make lifestyle changes...

Veterinarian examines dog in a veterinary clinic

Can Dogs Eat Green Beans? Vet-Approved Feeding Facts

Our canine companions are excellent at sneaking food off our plates or out of our hands, but human food isn’t always the best for them. Sometimes, our food has more fat and sodium than our dogs need, while other times,...

Can Dogs Eat Green Beans