Best Dog Probiotics

The best dog probiotics is Zesty Paws Probiotic Bites.

Did you know that billions and billions of bacteria live in your gut? Most are harmless, some are good and some are bad. 

Having the right amount of good bacteria helps with your overall immune function, improving your digestion, and provides many other health benefits.

The same goes for your dog too! They have billions and billions of (harmless, good, and bad) bacteria living in their gut.

But sometimes, the bad bacteria outgrow the good bacteria – causing your dog to lose its appetite and resulting in intestinal upset.

That’s where supplementing your dog’s diet with probiotics will come in handy. Probiotics are commercially produced versions of good bacteria, which can be used to promote the growth of good bacteria in your dog’s gut.

Here are the best probiotics for dogs to keep your pooch’s gut health healthy. We have also provided a comprehensive probiotics buying guide – to help you to make an informed decision when looking for the best probiotics for your dog.

#1 Zesty Paws Probiotic Bites

Zesty Paws Probiotics for Dogs - Probiotics for Gut Flora, Digestive Health, Occasional Diarrhea &...
  • Support Fido's Tummy - These functional soft chew supplements have a base of pumpkin and papaya (sources of enzymes)...
  • Features Clinically Studied DE111 Probiotic - This chewable functional supplement contains DE111, a clinically studied...
  • Six-Strain Probiotic Powder Blend - These chewables contain six probiotics (live bacteria) that support gut function and...

If your dog suffers from frequent tummy problems or digestive distress, a probiotic can help to ease digestion and soothe the waste elimination process. Zesty Paws probiotic supplement is a perfect choice for dog probiotics.

This is an all-natural probiotic supplement that works perfectly for both large and small dogs. Each Zesty Paws probiotic chew contains 6 strains of probiotics (such as the Lactobacillus acidophilus, DE111, L. plantarumL. brevisL. fermentum, and L. lactis) and prebiotics as well as more than 3 billion CFU, which is almost the same as the number of CFU in other outrageously priced prescription probiotics.

This supplement contains pumpkin for better support of the digestive tract and papaya which helps in the digestion of fats and proteins. Both pumpkins and papayas help the dog digest and eliminate food efficiently. The probiotic dog supplement is perfect for dogs with picky food habits and has a tasty pumpkin flavor that your dog will love.

Is your dog a picky eater? Zesty Paws Probiotic Bites smells just like dog food and can easily be mixed with your dog’s favorite food. This is an effective probiotic supplement that you can rely on to make your dog feel at its best. The supplement is delivered in a delicious chew that your dog just can’t resist. It contains both probiotics and prebiotics to give your dog complete digestive support.


  • Best for picky dogs
  • Safe, tasty, and easy to feed the dog
  • Manufactured in FDA-registered facilities
  • Has a delicious pumpkin flavor

This is our top pick because it contains six live strains of microorganisms, including the DE111 Probiotic, all of which help to improve gut health, strengthen immunity, and metabolize fat in dogs; plus, its papaya and pumpkin flavor not only improves the taste but also aids in digestion.

#2 PetVitalityPRO Probiotics

This is another popular probiotic for dogs that is available as a delicious nutritional supplement chew. In your dog’s mind, the probiotic will feel and taste the same as its usual treat. The PetVitalityPRO is a soft duck-flavored chew that contains more than 20 active ingredients.

It even includes a green superfood formula. Your dog will gladly eat up this delicious canine nutritional supplement with pleasure. If for any reason your dog looks like it’s not interested in the treat you can simply crumble the probiotic supplement and mix it with the dog’s food.

The PetVitalityPRO strengthens your dog’s gastrointestinal health with beneficial bacteria, boosts its immune system, and restores the dog’s stamina and energy. It is also an effective treatment for dog skin infections, urinary tract infections, and allergies.

The supplement has 4 billion probiotic CFUs which help to maintain the health of your dog’s gut. It also helps in preventing excessive gas, bad breath, and other dog infections. The supplement is available in jars of 60 and 150 chews to match your needs and budget.

PetVitalityPro contains a perfect blend of ingredients that creates a healthy treat for your dog. The supplement comes with a 60-day risk-free money-back guarantee. It has a pocket-friendly price too.


  • Enhances your dog’s gut health and immune system
  • Contains high-quality ingredients
  • Helps to prevent allergies
  • Fortified with antioxidants, vitamins, and phytonutrients

#3 Purina Pro Plan FortiFlora Dog Probiotic

Purina FortiFlora Probiotics for Dogs, Pro Plan Veterinary Supplements Powder Probiotic Dog...
  • One (1) 30-Count Box - Purina Pro Plan Veterinary Diets Probiotics Dog Supplement, Fortiflora Canine Nutritional...
  • Probiotic recommended by veterinarians (Kynetec, Probiotic Recommendation Study, March 2019)
  • A Probiotic supplement for the dietary management of puppies and adult dogs with diarrhea

The Purina Pro Plan FortiFlora Dog Probiotic is available in pre-measured packets for easy dispensing. It is one of the simplest ways of ensuring that your dog gets its daily dose of probiotics. This supplement helps in reducing health issues in dogs such as diarrhea, gas, and infections.

Purina Pro Plan FortiFlora Dog Probiotic is also quite easy to use. Just open up the packet and sprinkle the content over your dog’s food. Most dogs like its taste.

If your dog has suddenly developed diarrhea after a change in its diet, stress due to change in its environment, or after antibiotic therapy, these probiotics for dogs with their beneficial bacteria strains can be of great help to its digestive health.

The Purina Fortiflora canine probiotic is an easy to dispense probiotic supplement as it comes pre-packed in small packets. The supplement is easy to mix with dog food. It is recommended for dogs with diarrhea and other gastrointestinal health problems.


  • Effective probiotic supplement for both puppies and adult dogs
  • Prescribed by veterinarians
  • Helps to restore normal intestinal microflora
  • Natural product without artificial additives

#4 Dr. Mercola Complete Probiotics For Pets

Dr. Mercola Complete Probiotics Powder Supplement for Cats and Dogs, 3.17 Ounce (90g), Supports...
  • Each Container of Complete Probiotics for Cats and Dogs Contains 3.17 oz (90 g)
  • Following Dr. Mercola’s belief in providing the best quality products, this product is non GMO, Gluten Free, and Soy...
  • Our Complete Probiotics for Pets provides your cat or dog with 38 billion CFU beneficial bacteria from 14 carefully...

This is a natural bacterial probiotic for both dogs and cats. It is a complete dietary supplement from Dr. Mercola and is formulated to promote gastrointestinal health in dogs and cats using 14 probiotic strains. It works by enhancing your pet’s gut flora, intestinal tract, and immune system with live bacteria strains. 

The supplement also helps to increase nutrient absorption. It has a healthy balance of microorganisms to treat GI problems and boost nutrient absorption.

Each serving has 58 billion healthy bacteria to keep your dog energetic at all times. Keep your pet healthy, happy, and free of allergies with Dr. Mercola Complete Probiotics for dogs and cats.

Give your dog the energy it needs with this completely natural product by Dr. Mercola. It uses ten strings of beneficial bacteria to boost your pet’s digestive health and gastrointestinal immune system. It is also easy to mix in dog food.


  • Has more than 10 strains of good bacteria
  • Promotes your pet’s gut health
  • Restores the right balance after effects of antibiotics
  • Comes with 58 billion healthy bacteria

#5 Pet Ultimates Probiotics For Dogs

Pet Ultimates Probiotics for Dogs, 137 grams
  • DON'T BE FOOLED - many products contain just one species and as little as 1/20th as much active ingredient of our...
  • NONE OF THE BAD STUFF - Don't fall for Chinese-made dog probiotics or products using sugar, grain maltodextrins or even...
  • EASILY-DISPENSED POWDER ELIMINATES CHOKING RISK - Stop forcing huge tablets down your best friend's throat! Our...

If you are looking for an impressive number of gut-friendly microorganisms in a single dog probiotic supplement, then the Pet Ultimates Probiotics for Dogs is your best option. It has 22 strains of probiotics species and around 2 billion colony units in each scoop of the powdered supplement.

The supplement is a tasteless powder that dispenses easily within seconds. Your dog will not even realize there’s something extra in its food. It would just get healthier with every meal.

Pet Ultimates Probiotics contain beneficial bacteria that helps in the treatment of digestive problems including gas formation, bad breath, and even skin conditions. Most of these problems usually disappear after a few weeks of giving your dog the supplement.

It comes in tasteless powder form which eliminates choking risks and the tedious efforts of feeding tablets to your dog. It has 22 different species of probiotics and is a healthy option for your dog.


  • Massive 22 species of probiotics
  • Healthy concentrated formulation
  • Doesn’t contain fillers, soy, wheat, sugar, and artificial ingredients
  • Easy to sprinkle on dog food

#6 NUSENTIA Probiotic Miracle Dog Probiotics

NUSENTIA Probiotics for Dogs -( 360 Scoops)-Probiotic Miracle -Advanced, Species Specific Probiotics...
3,865 Reviews
NUSENTIA Probiotics for Dogs -( 360 Scoops)-Probiotic Miracle -Advanced, Species Specific Probiotics...
  • The Original probiotics for dogs and cats. 360 scoops per jar. (that's 360 Billion CFU per jar). Great value for large...
  • The #1 TRUSTED PROBIOTICS FOR PETS: 12 years of consistent, Natural results combatting dog diarrhea, loose stool, yeast...
  • VET Recommended - No rice. No Maltodextrin. Gluten-Free, Non-GMO, Non Dairy, No Soy, No Fillers, No Flavorings,...

Are you looking for a budget-friendly probiotic for your dog? The NUSENTIA Probiotic Miracle Dog Probiotics supplement is an effective and affordable dog probiotic option. It is available in powder form. The supplement can be used by dogs and cats, which makes it a perfect option for multi-pet households. It has a stable shelf life too.

Each scoop of the NUSENTIA Probiotic Miracle Dog Probiotics supplement provides around 1 billion CFUs of beneficial bacteria, which deliver effective results. It is one of the most effective yet affordable solutions for dog digestive and gastrointestinal problems today. It also comes with a huge number of servings to last you for a long time.

We like this product simply because it’s the perfect formula for small pups, helping them to eat more solid foods. This product mixes well without any lumping.


  • A vet-recommended probiotic with a billion CFU in each jar
  • 360 easy to administer servings in 1 container
  • Perfect for dogs with digestive health problems and allergies

#7 Rx Vitamins Essentials

Rx Biotic for Pets 2.12 oz Powder - Professional Veterinary Formulas - Hypoallergenic & Vegetarian
  • Probiotics are good bacteria that might work to inhibit the growth of potentially harmful bacteria in the digestive...
  • Rx Biotic Powder product may help address certain symptoms associated with digestive discomfort‚ such as mild...
  • The recommended serving size of one to four scoops daily‚ each container of Rx Vitamins for Pets’ Rx Biotic Powder...

This is another effective probiotics supplement that helps to prevent the growth of potentially harmful bacteria in your pet’s digestive tract. It’s available in powder form and is easy to administer in pet food. The probiotic helps to address most symptoms associated with gastrointestinal discomforts such as vomiting, diarrhea, and constipation.

Each container of Rx Vitamins probiotics powder will last for about 3 to 12 weeks depending on the number of scoops you feed your dog or cat every day. The recommended dosage is normally 1 to 4 scoops per day. This is a strong supplement that contains fructooligosaccharides which help to stimulate the growth of useful bacteria in your dog’s gut. It doesn’t contain artificial flavors and additives.

Rx Vitamins Essentials is a great probiotics supplement that helps to prevent potentially harmful bacteria from growing in your pet’s digestive tract. The supplement doesn’t contain artificial flavors and other additives that could potentially affect your dog.


  • Prevents the growth of harmful bacteria in the gut
  • Helps to prevent and treat digestive discomforts
  • Can last up to 12 weeks
  • Doesn’t contain artificial flavors and additives

#8 Nutramax Proviable Probiotic Supplement

Nutramax Proviable Digestive Health Supplement Multi-Strain Probiotics and Prebiotics for Cats and...
  • CONTAINS 7 STRAINS OF BENEFICIAL BACTERIA: A probiotic with multiple strains, each having different properties, has a...
  • SUPPORTS GASTROINTESTINAL HEALTH IN DOGS AND CATS: Imbalances such as stress from travel or kenneling, or change in diet...
  • CONTAINS PREBIOTICS TO SUPPORT GROWTH: Prebiotics are complex carbohydrates that can be used as a food source for our...

Nutramax Proviable probiotic supplements contain 7 key strains of probiotics (includes Enterococcus faecium). They help to treat bad breath in dogs, yeast infection, diarrhea, and other digestive issues in pets.

They are safe and effective in providing your dog with sufficient amounts of good bacteria to help the dog fight allergies and diseases. It also helps dogs get more energy and feel vibrant all day.

It is a highly rated probiotic supplement, with more than 2,500 five-star reviews on Amazon. Many dog owners have praised the Nutramax Proviable supplement for being able to cure their dog’s occasional bowel upsets.

Packed with both probiotics and prebiotics, the Nutramax Proviable helps to maintain intestinal balance during times of dietary indiscretion, dietary change, or stress-induced by travel or kenneling.


  • Safe 100% natural probiotics for dogs
  • Helps to improve your dog’s irritable bowel syndrome
  • Boosts your dog’s immune system health

#9 Hyperbiotics PRO-Pets

Hyperbiotics Pro Pets | Probiotics for Dogs & Cats | Small Micro Sized Chewable Pearl Shaped Tablets...
  • Get your cat or dog what they need with a slow time released delivery. With a patented delivery method, the probiotic...
  • An easy regimen and convenient! For pets up to 30 pounds, give them 1 pearl tablet per day. See instructions for more...
  • 6 Targeted Probiotic Strains PRO-Pets was designed according to the specific needs of dogs and cats. The strains in this...

This is another probiotics for dogs and cats that’s quite easy to swallow. It has six strains of probiotics and claims to be 15 times better than the other probiotic supplements.

It’s designed to improve the life of your pet, support the pet’s digestive health, and support the pet’s energy levels, healthy joints and bones, strength and vigor. It helps in promoting better nutrient absorption and tastes great for your pet too.

Hyperbiotics PRO-Pets is an effective probiotic supplement designed to boost your dog’s health. It’s an all-natural lactose-free and gluten-free non-GMO supplement with 6 strains of probiotics.


  • 100% natural probiotic supplement
  • An irresistible beef flavor that your dog will love
  • Contains 3 billion CFUs of beneficial bacteria
  • Available in tiny, easy-to-swallow pearls

Dog Probiotics Buyer’s Guide

Probiotics are living good bacteria that assist your dog in developing and maintaining a healthy digestive system and stomach. We often consider bacteria as unhealthy organisms that can cause problems in your body or your dog’s body. However, most vets recommend the use of probiotics to help your dog deal with a wide range of health issues such as intestinal infections, diarrhea, and many other health issues.

What Are The Benefits Of Probiotics?

Here are some of the key benefits of probiotics for your dog:

Treatment Of Irritable Bowel Syndrome And Intestinal Inflammation

Intestinal inflammation usually results from irritable bowel syndrome mostly caused by toxins that irritate the dog’s intestines and colon lining. The problem can be mitigated by introducing live cultures of useful bacteria to suppress and eliminate the activity of these offending microorganisms. You can do this by giving your dog probiotics that produce SCFAs.

Boost Your Dog’s Immune System

Probiotics are immune boosters and help to maintain your dog’s well-being. The digestive tract of your dog is aligned with lymph vessels that carry different types of disease-fighting cells. The cells fight pathogens including bacteria and viruses present in the gut.

They, however, can only fight the pathogens if the good health of the intestinal wall is properly maintained. Probiotics help to improve the integrity of the intestinal wall lining and boost the function of lymphatic cells. This helps to improve the dog’s immunity system.

Prevent Infections In The Dog’s Urinary Tract

As stated above, probiotics help to improve your dog’s immunity system by strengthening the gut’s walls and the lymphatic vessels. Viruses and bacteria residing in the gut cannot enter the lymph and the general circulation. Without such protection, harmful microorganisms can easily circulate through the kidneys and attach to the urinary tract causing serious infections. Probiotic supplements help to prevent such urinary tract infections.

Image from Nom Nom

Reduce Or Eliminate Allergic Reactions

When the activities of microorganisms in the dog’s body are eliminated or reduced, the immune system is further strengthened and allergic reactions are significantly reduced.

Probiotics strengthen the intestinal linings and reduce contact between allergens and hyperactive immune system cells in the dog’s gut. This helps to reduce and eliminate allergic reactions caused by unfamiliar or offensive ingredients in the dog’s diet.

Eliminate Stomach Upsets After Changing The Dog’s Diet

Your dog is likely to suffer stomach upsets when you switch its usual diet. This might happen if you don’t transition between the two diets gradually to give the dog ample time to adjust to the new diet. Abrupt changes in the dog’s diet can eliminate useful bacteria in the intestinal tract and cause excessive gas or diarrhea.

When you give the dog probiotic supplements while switching foods, it is more likely to maintain good health while making the diet transition.

Improve Your Dog’s Skin And Coat Health

When you feed your dog with probiotic supplements, you help to keep his digestive tract healthy and functional, which also helps to improve the dog’s skin and coat condition.

Probiotics eliminate the chances of harmful bacteria colonizing the dog’s skin because there will be fewer bacteria in the dog’s digestive system. The dog’s skin and coat will remain healthy at all times.

Factors to Consider When Buying Probiotics for Your Dog

Dog probiotics come with different ingredients and different health benefits. Finding the right probiotic product for your dog can be an overwhelming task given the huge number of such products available on the market today.

Here are some of the key factors to guide you when looking for the best probiotic product for your dog.

Health Benefits Claims

All probiotics are manufactured to boost your dog’s digestive and intestinal health. Some provide better health benefits than others. It will, therefore, be important to check the exact health benefit the probiotic product has before buying it.

Most probiotics improve your dog’s gut health and reduce diarrhea and constipation. There are other advanced probiotics with microorganisms that help to prevent vomiting, limit gas, and give your dog healthier and shinier skin.

While looking for health benefits, avoid going overboard by buying probiotics with too many ingredients that could be harmful to your dog. Just look for a product that’s beneficial to your dog’s health and well-being.

Image from Pet Plate

Capsule VS Powder Form

The first thing you need to consider is how you will serve the probiotics to your dog. Different dogs have different preferences.

For instance, some dogs will not eat anything served in pill form so buying probiotic capsules will definitely not work. You can disguise the probiotic by mixing it with your dog’s food.

Probiotics for dogs are available in capsule or powder form. Capsules can be mixed in the dog’s food or opened and sprinkled in the food. Powder probiotics are easier to serve because they are usually odorless and flavorless. If your dog is a picky eater, you may need to go for probiotic products that are available in powder form.

Allergy-Friendly To Your Dog

Check if your dog has an allergic reaction to any of the probiotics’ ingredients. You don’t want to cause more problems for your dog while trying to solve one problem.

For instance, avoid probiotics that have wheat or dairy ingredients which can aggravate reactions if your dog has food allergies. Check the ingredients carefully and confirm that the product is allergy-friendly before you purchase.

Look for key phrases such as gluten-free, wheat-free, and dairy-free. There are probiotics for dogs that come with natural ingredients including grass which may not react well with your dog.

Number Of Servings Per Package

There isn’t an exact formula for the right size or package of probiotics that work best for all dogs. Usage depends on how many times you’ll feed the supplement to your dog each day.

Probiotics in powder form provide more servings in each package and will, therefore, last longer. Powder servings can be adjusted easily and even save you money in the long run. However, probiotics in capsule form tend to be cheaper when you buy them in bulk.

Does The Manufacturer Offer A Money-Back Guarantee?

Most probiotic products are comparatively pricey. It’s, therefore, important to ensure that the product delivers the promised results or you will end up feeling cheated.

So look for a probiotic product that comes with a solid money-back 100% satisfaction guarantee from the manufacturer. Most brands provide a 60-day money-back guarantee while others offer guarantees of up to 90 days.

However, your buying decision shouldn’t solely depend on a money-back guarantee but on the quality and benefits of the product.

Final Thoughts

Your dog will benefit from a probiotic supplement in more ways than one. You can give the probiotic to your dog to keep it healthy or to solve digestive and intestinal problems.

There are different probiotic products on the market today, but our top pick for the best dog probiotic product is the Zesty Paws Probiotic Bites with Natural Digestive Enzymes Chews. It’s the best option for dogs with GI tract and immunity problems.

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Pete Decker