Best Probiotics For Dogs Review

5 Best Probiotics for Dogs in 2022

Before you go out and purchase the very first probiotic supplement you come across, you really ought to read up on them a bit, and also see which ones of them are considered the best. Choosing the best one all by yourself could be a bit tricky, and that is why we have decided to give you a list of the top 5 premium probiotic supplements for your dog. See which products they are, figure out which of them is the best for you, and if you’re still not sure, we’ll recommend our top pick at the end of the article.

For other ways of helping your pet, try CBD oil for dogs.

PictureBest ProbioticsSuited ForOur RatingPrice
Purina Fortiflora Canine Probiotic SupplementLarge / Small Dogs
VetriScience Labs Mega Probiotic for DogsPuppy / Dog
Amazing Nutritionals Probiotic Joint SupplementAll Types
Probiotic Miracle Dog Probiotics for DogsLarge Dogs
NWC Naturals Probiotics for Senior DogsSenior Dogs

How We Picked the Best Probiotics for Your Dog

Shelf Life

The shelf life of a product should be long, but not so long that it raises your suspicions about preservatives. For beneficial bacteria such as probiotics, we looked for products from reputable brands.

Strain Diversity

We tried to include products that don’t have too many strains, but also one or two that do. If your dog is just getting started on digestive enzymes and probiotics, don’t overwhelm his system with ones that are too diverse.

CFU in a Single Serving

The CFU stands for colony forming units. You should make sure the label states how many CFUs are in each serving rather than the entire container.  This is a case where more isn’t always better, just like strain diversity, so we included ones that, again, won’t overwhelm your dog’s gut.

The Best Probiotics for Dogs, Below

1. Purina Fortiflora Canine Probiotic Supplement

Product Specifications

  • Brand: Purina Fortiflora
  • Lifestage: Adult, Puppy
  • Breed Size: Small Breeds, Medium Breeds, Large Breeds, All Breeds
  • Product Form: Powder
  • Special Diet: Veterinary Diet

Our Review

Purina Veterinary Diets Fortiflora is one of the most popular probiotic supplements on the market and is our favorite supplement for dogs. The proof that this supplement is extremely popular is the fact that many licensed vets recommend it to the owners of their dog-patients because it has been proven to help out with various gastrointestinal issues, such as the digestive health, managing problems with diarrhea, lessening them, etc. Now, diarrhea usually occurs in dogs because of a sudden change in the dogs’ diet, stress in their surroundings, or antibiotic therapy. Luckily, this product can help in all of these situations, so if you have a dog that’s been suffering from digestive tract problems or other digestion issues, this is the digestive health product for your dog.

Even though there is no need for a vet’s prescription in order to get this probiotic product, it is highly recommended that you visit a veterinarian before you decide to purchase it. Only when the vet recommends it should you get it for your dog, and it will help them to overcome their problems.


  • Vet recommended beneficial bacteria
  • Helps with digestion
  • Helps make sure your dog has a healthy gut
  • Quick and amazing results


  • Some dogs could detect the taste


Animal Digest, Enterococcus Faecium, L-Ascorbyl-2-Polyphosphate (Source of Vitamin C), Brewers Dried Yeast, Vitamin E Supplement, Zinc Proteinate, Beta-Carotene, Salt, Manganese Proteinate, Ferrous Sulfate, Copper Proteinate, Calcium Iodate, Sodium Selenite.

Nutrition Information:

Caloric Content3,848 kcal/kg, 4 kcal/packet
Crude Protein43.0% min
Crude Fat10.0% min
Crude Fiber1.0% max
Moisture5.0% max

Why We Like It – This is our favorite product off this list, and is recommended by many veterinarians for dogs that have problems with digestive health and diarrhea.

Related; Purina Pro Plan Dog Food Review.

2. VetriScience Labs Mega Probiotic for Dogs

Product Specifications

  • Brand: VetriScience Laboratories
  • Lifestage: Adult
  • Breed Size: Small Breeds, Medium Breeds, Large Breeds, All Breeds
  • Product Form: Capsule

Our Review

The Vetriscience Labs Mega Probiotics is another amazing premium product for dogs, and you know the product is great when it comes from such a trustworthy company. Vetri Mega probiotic is a supplement made up of more than 5 billion various microorganisms, as well as 8 different digestive enzymes.

The greatest thing about them is the fact that all of them are non-diary sourced. Besides the microorganisms, there are also probiotics in this product, such as the fructooligosaccharides, which are basically fibers that are fully soluble. They promote the growth of many microbes in the intestines of your dogs by mixing with your dog’s food.


  • 8 digestive strains
  • Good for even healthy dogs
  • 5 billion micro-organisms
  • Powerful and fast-acting


  • A little bit of a hassle to pour over dog food


Microcrystalline Cellulose, Fructooligosaccharides, Dried Lactobacillus Acidophilus Fermentation Product, Dried Lactobacillus Plantarum Fermentation Product, Dried Lactobacillus Casei Fermentation Product, Silicon Dioxide, Dried Lactobacillus Brevis Fermentation Product, Dried Bifidobacterium Bifidum Fermentation Product, Dried Bifidobacterium Longum Fermentation Product, Dried Enterococcus Thermophilus Fermentation Product.

Nutrition Information:

Caloric Content0.12 kcal ME/capsule
Moisture6.0% max

Why We Like It – This great probiotic powder supplement for dogs comes from a well-respected company and contains 5 billion various microorganisms within each of the capsules, as well as 8 different strains, each strain of bacteria important – and they,  are all non-dairy sourced. Fantastic for your dog’s gut health!

3. Amazing Nutritionals Probiotic Joint Supplement

Product Specifications

  • Brand: Amazing Nutritionals
  • Lifestage: Adult, Senior, Puppy
  • Breed Size: Small Breeds, Medium Breeds, Large Breeds, All Breeds
  • Product Form: Chewable Tablet 
  • Special Diet: No Corn No Wheat No Soy, Grain-Free

Our Review

The Amazing Nutritionals Probiotic Joint Supplement is a product that has no byproducts or allergens, which basically means that it is a product that is completely safe and healthy for all types and breeds of dogs.

Apart from that, this product is also amazing in improving the condition of the joints, relieving joint pain, and the digestive health of the dog. Also, this product is known to be able to eliminate the bad breath, the loosened bowel movement, stomach bloats, and yeast infections. This product is completely free of any corn, yeast, grains, wheat, shrimp, fish oil, or any other ingredient that could be considered harmful for your dog.


  • No byproducts
  • Also relieves joint pain
  • Free from corn, wheat and grain
  • Helps with bloating


  • Your dog may not like the tablet


Lactobacillus Acidophilus 2 Billion: 30 mg, Pancreatic 4X (Proprietary Canine Blend Of Amilase, Lipase, Protease): 25 mg, Glucosamine Sulfate (2KCL): 100 mg, Chondroitin Sulfate: 100 mg, MSM Methylsulfonylmethane: 100 mg, Calcium (as Dicalcium Phosphate), Liver (Desiccated Beef, Undefatted), Stearic Acid, Whey, Bacon Flavor, Magnesium Stearate, Silicon Dioxide.

Why We Like It – There are no byproducts in this supplement for pets, nor are there any allergens, making it perfectly safe. It can improve the canine’s coat, skin, as well as their dog’s gut health. It is also able to eliminate bad breath, improve loosened bowels, prevent yeast infections, and help with your dog’s stomach bloating.

4. Probiotic Miracle Dog Probiotics for Dogs by Nusentia

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Product Specifications

  • Brand: Nusentia
  • Lifestage: Adult, Senior, Puppy
  • Breed Size: Small Breeds, Medium Breeds, Large Breeds, All Breeds
  • Product Form: Powder
  • Special Diet: Gluten Free, Non-GMO

Our Review

The Probiotic Miracle probiotic supplement from dogs comes from a brand that is widely considered to be trustworthy in the field of pet supplements as well as dog food. This is a product that contains a vast amount of probiotics that can help with the digestive and immune health problems that your dog might be experiencing, as well as other problems that could be tormenting your dog. Also, Nusentias Miraclezyme is a brand that can help prevent food poisoning by mixing in with your dog’s food.

The ingredients found in these Nusentia miracle probiotics for your dog are 100% natural and are therefore a great choice for all breeds, sizes or types. If you wish to prevent the growth of the harmful gut bacteria that can be found in your dog’s organism, that you ought to get this item because it is great at eliminating this threat!


  • Can also help prevent food poisoning
  • 100% natural probiotics
  • 5 billion CFUs
  • Money-back guarantee


  • Your dog could detect the powder


Inulin (Prebiotic), Bifidobacterium Animalis Lactis, Lactobacillus Acidophilus, Lactobacillus Rhamnosus, Lactobacillus Salivarius, Lactobacillus Plantarum, Lactobacillus Reuteri. Other Ingredients: Stearic Acid.

Why We Like It – This Nusentia probiotic miracle product offers various probiotics which help out with digestion issues and other health issues. This supplement is great at preventing food poisoning and help with skin and coat health.

5. NWC Naturals Probiotics for Senior Dogs

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Product Specifications

  • Brand: NWC Naturals
  • Lifestage: Senior
  • Breed Size: Small Breeds, Medium Breeds, Large Breeds, All Breeds
  • Product Form: Powder
  • Special Diet: Non-GMO

Our Review

NWC Natural Total-Biotics for Dogs and Cats is the last product on our list and is also a great one for preserving the great health and looks of your pet. This is a brand that comes to use with a new and improved probiotics formula that contains 14 different types of stabilized probiotics that can be used to help both your dogs and cats.

The NWC Natural Total-Biotics is the most popular product for improving the health of dogs in the United States, and is even approved by the vets! Not many products include stabilized glutamine, but this is exactly the thing what has made this product so great. This is a highly recommended supplement because it pretty much has everything a supplement for dogs needs to offer.


  • 14 stabilized probiotics
  • Vet-recommended product
  • Natural
  • Can be mixed well with dog food


  • Better for senior dogs


Total-Biotics is a high performance, fourteen species probiotic formula. Acidophilus, B. bifidum, Bacillus coagulans, L fermentum, B. lactis (B. animalis), B. longum, L. brevis. L. casei, L. plantarum, L helveticus, Lactococcus lactis, L. reuteri, E. faecium, L. Bulgaricus

Nutrition Information:

Crude Fiber59% max
Moisture1.5% max

Why We Like It – These NWC Natural Total-Biotics probiotic supplement offers many health benefits to your pet, and that is mostly due to the new and improved probiotics formula with 14 stabilized probiotics that are the ingredients of it and that are healthy for them.

What Are Probiotics And How Do They Help My Dog?

Basically, probiotics are live bacteria and yeasts that can be used to promote good health, and especially the health of the dogs’ immune system. Even though when we think of bacteria, we immediately think of something completely harmful and something that is the source of all the possible illnesses, the truth is that the probiotics are something good – something that offers us healthy gut bacteria which both humans and dogs need in their bodies in order to be healthy. That is why these kinds of supplements are great for both humans and pets that have been suffering from various gastrointestinal issues, and what’s even better about them is the fact that they can even prevent future health problems of this kind.

Probiotics for your Dogs gut health

The benefits include preventing diarrhea and lowering the levels of cholesterol. In order to have healthy and normal functioning of your dogs’ immune system, you need to feed your dog with these natural gut bacteria that you can find in this supplement.

Benefits of Probiotics For Dogs Health

There are numerous benefits of probiotics for your dogs’ health, and therefore it is really important to find out as much as you can about them, and especially if you have a dog that has been experiencing gastrointestinal problems. By regularly giving your dog this supplement, you would be able to restore all the healthy, beneficial bacteria (living bacteria) in the digestive immune system that your dog’s body needs, and this can help fix a lot of issues that your pet’s been experiencing.

There is a huge number of benefits that can be associated with these probiotics, and some of them include the following:

  • Better resistance to diarrhea
  • Improved resistance to food poisoning
  • A lower level of cholesterol
  • Antioxidants
  • Enhanced resistance to stress

Dogs’ digestive systems are something that can be extremely delicate as they have quite sensitive stomachs, and that is the main reason why so many dogs experience various types of gastrointestinal issues, and what’s really important to keep in mind is the fact that some of these can be rather serious.

Dog looking up at camera

Probiotics can do much in helping to support and maintain a healthy working digestive immune system, and this is something that all the experts agree on. Also, what’s great about probiotics is the fact that they have powerful antioxidant as well as anti-inflammatory properties, which are benefits that can contribute a lot to the well being and health of your dog.

Another thing worth considering is the fact that giving these probiotics to your dog can help increase the dog’s resistance to pet food poisoning, which is definitely an important thing.

Probiotics can be a huge help in enhancing your dog’s digestive/gastrointestinal health in a sense that there will no longer be any occurrence of the previously describes problems. It is true that the probiotics work differently for different breeds, but they have been proven to work for the vast majority of breeds.

Probiotic Side Effects

Probiotics for Canines

There are some side effects, that is true, just like there are side effects for any medical brand out there. The difference with this brand is the fact that the side effects that it offers are extremely mild and only affect the digestive system of your dog, which could result in gases or bloating.

Most of the serious side effects that happen due to the use of probiotics actually happen in people, but they have been known to occur in some pets as well, more specifically, in dogs and cats. It is believed that these dog supplements might cause some infections in your pets that can later be treated with antibiotics, but it would appear that these kinds of side effects happen rarely, if ever!

Probiotics might also cause some mild metabolism problems or the overstimulation of the immune system of your pet. Therefore, the greatest course of action would be consulting a veterinarian before you start administering probiotics to your dog.

Dog Probiotics Buyers Guide

Where to buy probiotics for dogs?

Buy dog probiotics

Most dog owners know that the probiotics are something that can be extremely beneficial to your pet, and that is why some of them ask this question. The answer is that you can buy them in all the places you’d usually buy pet food – at the pet store or online. There are numerous websites out there that offer these supplements, and that is why it is really important to check them out first before actually purchasing anything from them. The greatest choice would be Amazon because they have the lowest current prices and the largest selection of probiotic supplements online.

When to use probiotics for dogs?

If you have a dog that has been having noticeable digestive problems, like constipation or diarrhea, then you might start considering giving probiotic supplements to them, because they could help with that issue. So, if you have a dog with serious gastrointestinal issues, make sure you seriously consider these probiotic supplements as soon as possible, because they can help minimize the symptoms, and more importantly, increase the level of comfort of your pet.

Do probiotics for dogs work?

There have been countless studies done on these issues, and the results that they have offered look really promising. The basic outcome of these studies seems to indicate that these probiotics have the potential to help the dogs that have been suffering from various gastrointestinal problems, like constipation or diarrhea. Another important benefit that these dog supplements can offer is the boost of the immune system in dogs, which is being done by correcting the imbalance of gut bacteria in the organism. This can increase the overall health of the dogs, as well as well-being.

Which probiotics are safe for dogs?

Even though there are numerous human foods that contain the very same microorganisms that you can find in these probiotic supplements, most vets would agree that it would be better to give the dogs the actual supplements, and not the human food. Pretty much all of the probiotic supplements that you can find in the trusted pet stores or online stores are safe to give to your dog.

Purina Fortiflora Canine Nutritional Supplement


Are human grade probiotics safe for dogs?

There really isn’t any big difference between the probiotics that were meant for human use and the probiotics meant for dog use. However, there are some companies that make supplements with different ingredients for humans and different ones for your pet as well. Even though there is a possibility that the ingredients of these two types of probiotic supplements may differ, there is nothing wrong with giving your dog human grade probiotics supplement, as long as your dog can swallow them.

Our Top Pick For The Best Premium Probiotics for Dogs

Of all the amazing brands presented here, we believe that the greatest one is the Purina Veterinary Diets Fortiflora. It is a brand that is highly recommended by both the veterinarians and the professionals. The ratings of this product are extremely high, meaning that the customers love it as well and that they are happy with its results. If you have a dog with digestive problems, than this is the product for you!

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