10 Best Probiotics for Dogs in 2026 – Reviews & Top Picks

Our dogs are a part of our family, so we do everything to ensure they’re healthy, happy, and loved. So, whether your dog is a puppy or getting up there in years, you want to do whatever you can as a pet parent to achieve those three things.

If your furry friend is having a problem with digestion, using the bathroom, or even seasonal allergies, you will likely make an appointment with the closest vet. If your vet has recommended probiotics for your dog, then you’re probably wondering what the best one is.

We’re here to help you with that. In this guide, we’ll give you our reviews of the best 10 probiotics for dogs, in our opinion, and a buying guide to help you make that final decision.

A Quick Look at Our Favorites for 2026

Rating	Image	Product	Details
Best Overall		Purina Pro Plan FortiFlora	Contains essential antioxidants and vitamins Recommended by vets Easy to use and digest	Check Price
Best Value		Nusentia Premium Blend Supplement	Budget-Friendly Made in the USA Shelf-stable and contains 6 strains of probiotics	Check Price
Premium Choice		Zesty Paws Soft Chews Supplement	Eases Digestion 6 strains of probiotics and prebiotics All-natural	Check Price
Best for Puppies		The Honest Kitchen Probiotics	Strengthens the immune system Easy to digest Supports healthy development and growth	50% off $30+*
		Amazing Nutritionals Probiotic	Works great for older dogs Supports digestive health Supports mobility	Check Price

* The Honest Kitchen 50% discount applies to first-time orders only and requires a minimum purchase of $30.

The 10 Best Probiotics for Dogs

1. Purina Pro Plan Veterinary Diets FortiFlora Powder Supplement – Best Overall

In our opinion, the best overall probiotic for dogs would have to be Purina Pro Plan Veterinary Diets Fortiflora Powder Supplement. Not only does the supplement contain probiotics, but it also contains essential antioxidants and vitamins that your dog needs for gut health and overall health as well. This supplement is often recommended by vets and is easy for dogs to digest. In addition, since it comes in powder form, it’s simple to use as a food topping, so your dog never knows he’s getting something good for him along with his daily food.

This product's only drawbacks include being a little expensive for some pet owners’ budgets. It’s also possible that this product won’t work for every dog, so do your research ahead of time.

2. Nusentia Probiotic Miracle Premium Blend Supplement – Best Value

At number two on our list is the best probiotic for dogs for the money. We put Nusentia Probiotic Miracle Premium Blend Supplement in this spot because of its affordability and the fact that it’s made in the United States. This supplement is a powder and can be mixed in with your dog’s food or used as a food topping.

It contains six strains of probiotics and is shelf-stable, meaning you don’t have to refrigerate it or worry about it going bad.

The only negatives to this supplement include pet owners saying it caused upset stomach in their dogs, meaning it might not be for every dog. It has also been reported that the supplement isn’t something all dogs will eat, even if it’s mixed in with their food.

3. Zesty Paws Probiotic Bites with Natural Digestive Enzymes Chews for Dogs – Premium Choice

At number three on the list and our premium choice is Zesty Paws Probiotic Bites with Natural Digestive Enzymes Chews for Dogs. This soft chew supplement is all-natural and contains six strains of probiotics and prebiotics. In addition, the supplement contains natural digestive enzymes, which help to ease your pet’s digestion and works great for pets from small to big.

The only negatives to this soft chew are that some pets don’t seem to like the taste, and some pet owners reported the product smelled horrible when they opened the package, making their pets not want to touch them.

4. The Honest Kitchen Daily Boosters Probiotics - Best for Puppies

•  * Use Code 50DOGSTER to SAVE 50% On Your First Order of $30+

The Honest Kitchen Daily Boosters Probiotics slips in at number four as our pick for the best probiotic for puppies. Not only is this powder easy for their little stomachs to digest, but it also supports healthy development and growth and strengthens their little immune systems. We all know that puppies tend to eat whatever they can get their mouths around, so this daily booster probiotic can help keep their tummies settled and their bowels moving, too.

It has been reported that some puppies don’t like the taste of the powder, but mixing it in with their food should help with that. This supplement also works for cats and any life stage of dogs as well.

5. Amazing Nutritionals Probiotic Joint & Hip Support Supplement

We all have a loyal pet dog that’s getting up there in years at some point. That’s why we have Amazing Nutritionals Probiotic Joint & Hip Support Supplement at number five on our list. Though this supplement works for any life stage, it works best for older dogs. This chewable tablet has helped many older dogs who suffer from joint pain, arthritis, and even stiffness as they age.

The supplement supports digestive health and mobility at any stage of life but works great for older dogs who need it to get around.

Some owners have reported the chewable tablets being too hard for their older dogs to chew.

6. Zesty Paws Aller-Immune Soft Chews Allergy & Immune Supplement

Many of our furry pals suffer from allergies as well as digestive issues. If you’re searching for something that’s an immune supplement and an allergy reliever at the same time, then our number six choice, Zesty Paws Aller-Immune Soft Chews Allergy & Immune Supplement, could be the right choice for you.

This supplement is a soft chew that dogs often think is a treat. It contains five strains of probiotics, which means it’s not the strongest probiotic on our list, but since it helps combat allergies, it’s worth a try. The only drawback we saw of this probiotic supplement is that it might not work for every dog breed. However, if you do your research well or talk to your vet, you should be able to tell.

7. Honest Paws Probiotics for Dogs

This probiotic supplement from Honest Paws will not only help your pooch maintain a healthy gut and digestion, but also helps support immunity and even gives seasonal allergy relief. It contains active ingredients such as spinach leaf extract, inulin, and the Honest Paws probiotic blend. Plus, it’s chicken flavored to be irresistible to your pooch.

Some owners reported their dogs having runny stools after starting on these probiotics, and some dogs turned their noses up at their food after this power was added.

8. PetVitalityPRO Probiotics for Dogs with Natural Digestive Enzymes

At number eight on our list of the top 10 best probiotics for dogs is PetVitalityPRO Probiotics for Dogs with Natural Digestive Enzymes. This supplement includes a green superfood formula, giving your dog the necessary vitamins and minerals. It also works to build immunity, get rid of gas, allergies, skin that itches, and hot spots, and cure bad breath and yeast problems.

Users have reported that it works fast and that the soft chew crumbles into food easily for the picky pets in the bunch.

The superfood formula does give the soft chews an unappetizing-looking greenish tint, and it may not work as intended for all dog breeds.

9. Pet Ultimate’s Probiotics for Dogs

At number nine on our list is Pet Ultimate’s Probiotics for Dogs. This supplement comes in powder form and contains 22 strains of probiotics, the most of any probiotic on our list. It’s easy to use and is said to be tasteless, so you don’t have to fight your dog to take it. It also comes with a satisfaction guarantee if it doesn’t work for your pet. However, it is essential to note that this product might not be suitable for all dog breeds. With the satisfaction guarantee, however, it’s worth checking out to see if it helps your dog with digestive issues and other issues he might need a probiotic for.

10. Nutramax Proviable-DC Capsules Dog & Cat Supplement

Finally, sliding in at number 10 on our list is Nutramax Proviable-DC Capsules Dog & Cat Supplement. This supplement is said to act fast and be easy to use, as it’s in capsule form. It also contains live cultures, which is great for your dog’s health. You can give the capsule to your dog, or if he’s a super picky eater, you can wrap it inside a dog treat or even open the capsule and sprinkle it on his food.

This supplement might not work on all dog breeds, and many users have reported the supplement working; then, when they ordered more, it seemed that the company might have changed the formula.

Buyer’s Guide: How to Choose the Best Probiotics for Dogs

Now that we’ve reviewed the best probiotics for your dog, we’ll talk a little bit about the benefits and side effects of probiotics below. If you’re worried about giving probiotics to your pet, it’s best to make an appointment with your local vet for recommendations and to see if your dog needs or can be treated with these supplements.

What Are the Benefits of Probiotics?

The benefits of probiotics in dogs are apparent. Depending on which and how many strains are used in the probiotic supplement, probiotics can help with the following.

• Improved digestion and GI tract health
• Reduced risk of intestinal worms
• Better quality of stool
• Fresher breath and oral health
• Develops a stronger immune system
• Helps with skin issues and allergies
• Ear infections

Probiotics can also help your dog to relax and be less stressed because of the benefits above.

What Are the Side Effects of Probiotics?

While there seem to be very few side effects with probiotics, it is possible that your dog could have a reaction to them. Loose stool, gas, constipation, and bloating have been reported by pet owners before. It is best not to switch up your probiotics for your dog because this increases the risk of side effects such as the ones above. If you’re unsure of what to give your dog when it comes to probiotics, it is best to contact your vet for recommendations.

Our Selection Process For Probiotics for Dogs

To create this buyer's guide, our writing team and editorial staff checked customer reviews, brand reputation, and veterinary approval ratings to present the probiotics we think should be highlighted for our readers. In some cases, we conducted hands-on testing along with seeing how much our dogs liked the probiotics. All these factors were considered when selecting these listed probiotics to help you make the best purchase for your furry friends.

Why Trust Dogster?

Since 2004, Dogster has been a trusted brand for dog owners online, which means we have a lot of experience with probiotics. We take pride in promoting the well-being of all dogs—from toy breeds to giant canines. Our in-house veterinarians, writers, and editors examine each product on our lists, ensuring its quality and reputation. As pet owners ourselves, we only want the best for our furry companions. At Dogster, we are transparent about the products we promote. The nutritional information, overall brand reputation, and customer reviews are all considered for these lists. We inform you how we want to be informed.

Final Thoughts

This concludes our reviews of the top 10 best probiotics for dogs, in our opinion. Our first-place spot goes to Purina Pro Plan Veterinary Diets Fortiflora Powder Supplement for its use of essential antioxidants and easy-to-use formula. Nusentia Probiotic Miracle Premium Blend Supplement is number two on the list for its affordability and shelf stability. Finally, spot number three goes to Zesty Paws Probiotic Bites with Natural Digestive Enzymes Chews for Dogs for the six strains of probiotics and prebiotics it contains.

We hope our reviews and buying guide help you find the best probiotic to keep your dog healthy for many years.

Featured Image Credit: Lee waranyu, Shutterstock