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 Listerine Strips? Vet-Reviewed Risks & Alternatives

Vet brushing dog's teeth

We’ve all been on the receiving end of a licky pooch’s bad breath at some point, and safe to say, it’s not pretty. For some dogs, their smelly breath is so bad that it can clear a room, leading bewildered dog parents to desperately seek relief.

However bad your dog’s breath gets, avoid reaching for human products like Listerine strips or mouthwash to freshen things up because these kinds of products are not recommended, may be unsafe, and are not a long-term solution to the problem. Read on to learn more about why it’s best to keep your dog away from Listerine strips.

divider single dog paw oct 2024

Why Can’t Dogs Have Listerine Strips?

Listerine strips are or are not safe for dogs due to some of the ingredients they contain.  While scientific research into Listerine Strips hasn’t been done, we can make deductions about the potential risks and their unsuitability for dogs by looking at various factors. These include:

Ingredients

Menthol—which is toxic to dogs—is one of the ingredients in Listerine strips. Other common products that often contain menthol include cough drops, chewing gum, and breath mints.  Any product containing menthol could cause gastrointestinal upset because menthol is irritating to a dog’s oral and digestive tissues. If your dog has eaten a Listerine strip or something else containing menthol, call your vet immediately for advice.

Other ingredients in Listerine Strips which could be damaging to your dog include:

  • Polysorbate 80; this is a surfactant that may cause mild allergic reactions in dogs
  • Eucalyptol; oil from the eucalyptus plant that is toxic to dogs. It causes vomiting, diarrhea and weakness.
  • Propylene Glycol: Known to be toxic to dogs

Expert Information

We checked out what vets have to say about the issue of bad breath in dogs. Not one of these sources recommends treating bad breath with human products like Listerine strips or mouthwash, so on that basis alone, it’s best to stick to only products formulated for dogs.

If you need guidance on keeping your dog’s dental hygiene healthy, we suggest you speak to a vet.

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


Lack of Dog Safety Testing

Listerine strips have been formulated for human use, so are safety tested for humans, not dogs. On that basis, and the fact that they contain ingredients that are toxic to dogs, it’s best to avoid them and similar products completely.

divider dog paws oct 2024

Dangers of Feeding Listerine Strips to Dogs

Based on the list of ingredients in Listerine Strips, there are very real dangers of feeding your dog any at all.  If your dog manages to eat a Listerine strip, they may experience and display signs like:

  • Vomiting
  • Diarrhea
  • Lethargy
  • Abdominal pain
  • Nausea
  • Depression
  • Loss of muscle control

Furthermore, breath-freshening products are not long-term solutions for bad breath in dogs because they do not treat the conditions that may be causing bad breath. If your dog has bad breath, they need to be examined by your vet because dental disease is likely to be the cause.  Your vet will examine your dog’s mouth and advise on a treatment plan, which may involve dental cleaning, tooth removal or at home tooth brushing.

beagle dog lying on bed looking sick
Image Credit: HelgaBragina, Shutterstock

Can Dogs Have Breath Mints?

No. Breath mints and sugar-free chewing gum typically contain xylitol, a sugar-free sweetener that’s toxic to dogs. In addition, though xylitol isn’t an ingredient in Listerine strips specifically, it can be found in various other dental products like mouthwashes, dental floss, toothpaste, and breath fresheners. These products contain varying amounts of xylitol.

Xylitol poisoning can cause a dog’s blood sugar to drop rapidly (within 10–30 minutes).  Hypoglycemia (low blood sugar) is a dangerous condition that can cause collapse and seizures in extreme situations.  If a large amount of xylitol has been consumed, liver failure can occur. Signs to watch out for include being unsteady, seizures, shaking, and weakness. Contact a vet right away if you think your dog may have consumed any amount of xylitol or is showing any of these signs.

divider dog faces oct 2024

How Do I Treat My Dog’s Bad Breath?

Periodontal Disease
You are free to use this image but we do require you to link back to Dogster.com for credit

If your dog has foul breath, the first step is to see a vet as they may have a dental condition like periodontal disease or an underlying health condition (nutritional deficiencies, kidney disease, liver disease, etc. can all be causes of bad breath) that requires treatment.

In some cases, bad breath is caused by foreign bodies stuck in the mouth or the consumption of non-food items that occasionally can get lodged between the teeth or in the roof of the mouth.  Whatever the cause, your vet will be able to let you know if a dental procedure, special dental diet, or another form of treatment is necessary.

If your dog doesn’t have a health issue but you want to prevent bad breath, it’s a good idea to brush their teeth daily with a dog-safe toothpaste. This can help prevent plaque and the development of periodontal disease. Dental chews may also help but they are not as good as brushing their teeth.

You can even get mouthwash formulated for dogs, which is added to their water. However, you should never add human mouthwash to your dog’s water supply because it may contain ingredients—like xylitol and alcohol—that could make your dog very unwell.

divider dog paws 3 oct 2024

Conclusion

In conclusion, you should not give your dog Listerine strips and instead opt for dog-safe products that have been designed specifically for them. Ideally, you’ll want to take your dog for bi-annual health check ups so the vet can get a look at their teeth and make sure they’re in good condition.


Featured Image Credit: New Africa, Shutterstock

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

Mini Goldendoodle Dog Breed: Info, Pictures, Care & More

A Miniature Goldendoodle is a hybrid dog, the result of mixing a Golden Retriever and a Poodle. Although they are not purebred, they...

Why Do Male Dogs Hump Other Male Dogs? Vet Reviewed Causes

Not all parts of dog ownership are pleasant, and dealing with behavior like your male dog humping other male dogs is one of...

Why Is My Doberman So Skinny? 4 Vet-Reviewed Reasons

If you have a pet Doberman, you know that they are lean from birth and have an athletic build. However, you also know...

Dog Training Education Month 2025: What Is It & How to Celebrate

Being a dog parent is a rewarding but often tough job. There are numerous things that you need to do to keep your...

More related

What Is a Double-Coated Dog? Vet-Verified Info, Breed Examples & Care Guide

All dogs are pretty impressive in looks. After all, if you consider they all come from wolves, it’s wild to consider that all...

Teaching A Greek Dog to Swim: Hela’s Adventures

Hi, I’m Dr. Maja! Read my introduction to learn more about me and my two crossbreed dogs, Lava and Hela. So, as a...

Why Does My Dog’s Pee Smell So Bad? 4 Vet-Verified Causes & Care

Dogs urinate several times throughout the day, but most of the time, we don’t notice the odor unless the urinating takes place indoors....

Wolf vs Dog: Differences Explained (With Pictures)

Have you ever watched your dog “wolf” down a meal and wonder to yourself if dogs and wolves somehow share lineage? Or how...

Keep reading

Can Dogs Eat Kumquats? Vet-Reviewed Facts & FAQ

A kumquat is a small citrus fruit native to Southeast Asia that looks similar to an orange. They aren’t nearly as common as mandarin oranges but can still be found in kitchens around the world. Before you share your snack...

Can Dogs Eat Kumquats

Can Dogs Eat Carrot Cake? Vet-Reviewed Facts & Safe Recipes

We are all well aware that human foods can be harmful to dogs. Some just don’t have any health benefits for canines, while others are highly toxic to them, including many sweet treats. Dogs shouldn’t eat carrot cake, though if...

Can Dogs Eat Carrot Cake

10 Best Foods for English Bulldog Puppies in 2025 – Reviews & Top Picks

Full of charm, humor, and personality, English Bulldogs are among the most popular and well-known dog breeds in the world. All puppies are hard to resist, but the wrinkly skin and smooshed noses of baby Bulldogs make them even more...

feeding english bulldog puppy

6 Best Dog Foods for Shiba Inus in 2025 – Reviews & Top Picks

As with most pets, the Shiba Inu is at its healthiest when eating high-quality dog food that is specially designed to meet its needs. This breed is energetic but also prone to becoming overweight due to being a small breed...

Shiba Inu dog eating from stainless steel bowl

Can Dogs Eat Artichokes? Vet-Verified Nutrition Facts & FAQ

Artichokes are large thistle-like perennials grown for their edible flower buds. Their leaves, stems, and roots are often used to make extracts for medicines, but the plant can also be used in recipes like dips and side dishes. The plant...

Can Dogs Eat Artichokes

My Dog Is Licking the Plate, Should I Let Them? Vet-Reviewed Health Concerns

You’re finished with your plate, but you still have a bunch of stuff you don’t feel like scraping off into the trash. Since you have a living, breathing garbage disposal in your house, you might just throw it down and...

Hungry dog licks empty plate with tongue

Can Dogs Eat Fried Chicken? Vet-Verified Risks, Alternatives & FAQ

The hot pop of frying chicken sends dogs flying from the sofa just as easily as a tantalizing takeout box from your favorite chicken chain. It may be finger-licking good, but is it safe and healthy for your dog? Unfortunately,...

Can Dogs Eat Fried Chicken

Member’s Mark vs. Purina Pro Plan Dog Food – 2025 Comparison, Pros & Cons

There are a lot of decisions you’ll face as a dog owner, but one of the most important choices you need to make is what food you’ll be feeding your pet. You want the best for your dog, but with...

Dogster_Dog Food Member_s Mark vs Purina Pro Plan