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.

L-Carnitine for Dogs: Benefits, Uses & Side Effects (Vet-Reviewed)

dog medicine

There are a ton of supplements available for dogs nowadays, and as we naturally all want the best for our pets and want them to be as healthy as possible, many of these supplements are worth looking at. The first step in your dog’s overall well-being is a healthy, nutritious, balanced diet complete with all the macronutrients, vitamins, and minerals that they need to thrive. That said, there is a place for supplementation too.

L-carnitine is a vital nutrient that has many important functions in your dog’s body. A deficiency in this nutrient can result in a host of health problems, including muscle pain, lethargy, and most notably, heart disease. In this article, we take a look at the function of L-carnitine in dogs, its benefits, and whether there are any side effects associated with supplementation. Let’s dive in.

divider single dog paw oct 2024

What Is L-carnitine?

L-carnitine is an essential amino acid that helps transport fatty acids in order to turn them into usable energy in your dog’s body. It’s necessary for optimal heart, brain, and muscle function. This amino acid is usually produced naturally in healthy dogs, but some dogs present a deficiency, in which case, a supplemental form of L-carnitine may be necessary. Typically, carnitine is derived from animal-based protein sources in your dog’s food, such as red meat, fish, and poultry, so including these foods in your dog’s diet is vital.

person giving dog a treat
Image Credit: Omerlavon, Pixabay

L-carnitine Benefits and Uses

There are many benefits to L-carnitine supplementation, but you should always consult with a vet before adding this supplement to your dog’s diet. A healthy, well-balanced diet should be sufficient for most dogs to produce the amino acids themselves, but there are important instances where supplementation is necessary.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1

The ever-growing known benefits of L-carnitine supplementation include the following.

Prevention of heart disease

L-carnitine supplementation is most often recommended for dogs with heart disease. Studies show evidence of improvement in dilated cardiomyopathy (DCM) in Boxers with L-carnitine supplementation, though the positive results are inconsistent with other breeds with the same condition. Most instances of DCM are breed-specific inherited conditions, while other cases are caused by diet, and this may have an impact on the effectiveness of supplementation.

Fat metabolism

L-carnitine aids the fat metabolism in your pooch, which can help them maintain lean muscle mass and help with muscle recovery after exercise and may even help in weight loss.

Potential Side Effects

In most cases, supplementing L-carnitine into the diet of healthy dogs is unnecessary, although many pet owners choose to take a preventative approach and give their dogs small amounts regardless.

Some commercial pet foods include L-carnitine too. In general, this is a fairly safe practice because the supplements will be broken down by your dog’s body and excreted as waste if they are not needed. Plus, L-carnitine supplements are fairly inexpensive.

dogs
Image Credit: Kapa65, Pixabay

There are few side effects associated with the supplementing of L-carnitine in dogs, and it is considered safe overall. Minor side effects have been reported, however, including stomach issues, nausea, diarrhea, and loss of appetite.  As with any form of supplemental nutrients, it’s best to consult a vet first.

What About L-carnitine in Pet Food?

There are claims and even studies conducted around the premise that including L-carnitine in pet food can help with weight loss in overweight dogs. However, this has been shown to have a negligible effect on both weight control and weight reduction, and a reduction in overall caloric intake is effective on its own.

However, there is evidence that including L-carnitine in the diet of working dogs may benefit their performance and recovery and aid in muscle repair. In one study, Labradors that were supplemented with L-carnitine showed improvements in performance, muscle recovery, and body composition and showed less oxidative stress during strenuous exercise sessions.

divider dog paws 3 oct 2024

Conclusion

An essential nutrient in a dog’s diet, L-carnitine is usually not something that most pet owners need to be concerned about, especially if their dogs are eating a nutritious, balanced diet with plenty of animal-based protein. There are cases where L-carnitine supplementation may be necessary, but it’s best to speak to your vet before adding it to your dog’s diet.

See also: 


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

What Is the Rainbow Bridge? The Incredible Story Behind the Poem

Rainbow Bridge is a poem that has brought comfort to grieving pet parents all over the world. In it, pets who die don’t...

Do Dogs Like Baby Talk? Vet-Approved Facts & FAQ

It’s difficult to resist the urge to speak to your dog in what scientists call “Dog-Directed Speech.” Dog-Directed Speech is similar to “Infant-Directed...

What Size Crate Do I Need for a Boston Terrier? Facts & Tips

A crate is one of the essential items you must purchase before bringing home a Boston Terrier. If you are a first-time pet...

Happy Tail Syndrome in Dogs: Our Vet Explains the Signs, Treatments & Prevention

Don’t let the name deceive you – Happy Tail Syndrome is not a particularly happy situation. In fact, it can be extremely messy,...

More related

How Much Exercise Does a Bichon Frise Need? Vet-Reviewed Advice

The Bichon Frise is a popular dog breed that is friendly, loving, and considered great for many people with dog allergies. You also...

Do Siberian Huskies Bark a Lot? How Much & How to Stop It

Barking is a common problem for many dogs. If you live in a quiet neighborhood, introducing a vocal dog isn’t likely to win...

Blue Blood Cane Corso Dog Breed: Info, Pictures, Care & Facts

The Blue Blood Cane Corso is a hybrid dog breed that’s a cross between the Alapaha Blue Blood Bulldog and the Cane Corso....

Are Pet Owners More Empathetic Than Other People? What Science Says

We’ve all heard the claims that pet owners are more loving and empathetic than non-pet owners. Not only are they supposed to be...

Keep reading

Dr. Marty Nature’s Blend Dog Food Review 2025: Our Expert’s Opinion

Review Summary Dr. Marty is a pet food company founded by long-time veterinarian, Dr. Marty, whose focus for the past 45 years has been on creating healthy and nutritious all-natural foods for dogs and cats. Dr. Marty’s mission is to...

Dogster_Dr. Marty Nature’s Blend Dog Food Review

Can Dogs Eat Bamboo Shoots? Vet-Reviewed Facts & FAQ

Bamboo shoots are a popular vegetable in many Asian countries and have been enjoyed as a dietary staple for centuries. If you’re cooking with bamboo shoots in your home and your dog steals a bite, or you’re just wondering if...

Can Dogs Eat_bamboo shoots

Can Dogs Eat Tahini? Vet-Verified Facts & FAQ

Tahini is delicious, rich, and wholesome! You can find sesame seed paste in many cuisines worldwide, like those in the Middle East, Israel, China, Africa, Japan, Turkey, Iran, and Korea. In addition to providing several vitamins and minerals, tahini is...

Can Dogs Eat Tahini

KetoNatural Dog Food Review 2025: Our Expert’s Opinion

As dog owners, we all want what’s best for our pets. That includes feeding them only the best, high-quality food. But with so many different dog foods out there, how do we know which one is best? The best and...

Dogster_KetoNatural Dog Food Review

Do Dogs Need Carbohydrates? Vet Approved Facts & Advice

Carbohydrates are sugars, fibers, and starch. Strictly speaking, dogs technically do not need carbohydrates in their diet, but because carbs produce energy, they are beneficial when included in a dog’s balanced diet. This means you should ensure your dog eats...

Cute Samoyed dog eating from bowl at home

Can Dogs Eat Chicken Gizzards? Vet-Verified Facts & FAQ

Dogs can eat chicken, but can dogs eat chicken gizzards? Yes, you can feed your dog chicken gizzards! Of course, as with any food, there are potential risks to feeding your dog chicken gizzards. However, these risks can be largely...

Can Dogs Eat Chicken Gizzards

7 Best Budget-Friendly Dog Foods in 2025 – Reviews & Top Picks

Feeding our dogs can be a monumental task. Sometimes it does seem like they never stop eating! The cost of food and treats can add up quickly and leave pet parents scouring the recesses of the internet and ad booklets...

labrador with its food close up

Spirulina for Dogs: Vet-Reviewed Benefits, Uses & Tips

Everyone has heard of the benefits of plant-based foods, and this way of eating has become more popular among people in the last two decades. Spirulina is a supplement used every day by thousands of people because it’s rich in...

spirulina powder and tablets in a wooden bowl