Probiotics For Dogs – How Do They Help My Dog?

Fortiflora for dogs image of dog probiotics

Probiotics are types of beneficial bacteria living in the digestive tract. They come in a variety of diverse species. Writing for the Whole Dog Journal, Mary Straus informs us that some probiotics species primarily live in the dog’s small intestine. Others reside in the colon (large intestine).

The digestive system of our pets, just like ours, houses billions of bacteria that are responsible for keeping the gut running smoothly. All dogs get many benefits from using probiotics.

According to, dog probiotics were discovered by Nobel Laureate Elie Metchnikoff. He experimented with various natural friendly intestinal bacteria. He discovered that certain bacteria help improve inflammation, growth rates, and intestinal problems.

This article on Probiotics for Dogs is just one section of our complete Best Dog Vitamins reviews in the Best Reviews Guru website.

Dog probiotics work by adding good bacteria to your dog's digestive system.  These assist in digestion and boosting the dog’s immune system. Probiotics prevent the growth of some types of bacteria harmful to the health of a dog. Left unattended, such bacteria can cause much discomfort to your pet.

Probiotics are good for your pet. They help prevent urinary tract infections. They also control allergies by reducing inflammation of the intestines. Simply put, they make it harder for parasites to get absorbed into the system.

Our favorite probiotic for dogs at this point is ​Purina Fortiflora Canine Nutritional Supplement.  It is the #1 product in many Amazon product categories.  It is very popular because it is made by a great company with a good reputation, and it comes in easy to use powder packets.  If you are after the lowest price, the best bet is Amazing Probiotics for Dogs.  It comes in bacon flavor tablets!

Here we present some of the best probiotics for dogs available today.  Almost all of these are very close to 5 Stars out of 5 at Amazon.  The serving count is approximate, based on 25 lb dog and may vary.  This also applies to the estimated pricing, where the exact cost per dog may depend on dog size.  Look below the Guide for details or click on an image for more information on any products. 

A Buying Guide to Probiotics for Dogs







Fortiflora for dogs image of dog probiotics

Purina Fortiflora Canine Nutritional

Powder in Packets



probiotics for dogs image of Advita Powdersh oil for dogs

Advita Powder Probiotic For Dogs

Powder in Packets



digestive enzymes for dogs image of amazing probiotics for dogs

Amazing Probiotics for Dogs

Bacon Flavor Tablets



image of fish oil for dogs

Petvi All Natural Supplement

Powder With Scoop



image of fish oil for dogs

H3 Essentials Probiotics for Dogs




1. Purina Fortiflora For Dogs Nutritional

image of fish oil for dogs

Purina Fortiflora For Dogs Canine Nutritional Supplement is the #1 Best Seller at Amazon in probiotics for dogs. Lots of cheap probiotics lose their potential benefits even before they reach the intestine. The beneficial ingredients in Purina Fortiflora for Dogs Supplement are excellent in managing and reducing diarrhea attacks.

  • Made with probiotics and micro-flora
  • Excellent for pets experiencing gastrointestinal (GI) distress
  • Balances the dog’s intestinal enzymes
  • A natural antioxidants source
  • Designed for boosting the immune system.

Your pet may experience diarrhea due to lifestyle changes. These could be from eating bad food, using antibiotic therapies or a change in location. In such a situation, I recommend you try Purina FortiFlora for Dogs.

It is a good supplement if your puppy has soft stools. It is also a good regular supplement for pets that may appear sick, yet you know they are in general good health.

This supplement contains SF68, a natural probiotic that boosts the digestive system of your dog. The high levels of antioxidants are formulated to boost a strong immune system. The intestinal tract gets strengthened by the micro-flora. The administration is easy: simply sprinkle onto your dog's daily food!​

2. Advita Powder Probiotic Nutritional Supplement For Dogs

image of fish oil for dogs

This supplement is made using ingredients designed to maintain the digestive health of your dog. The powder contains substances found in a broad range of herbs, fruits, and vegetables. The supplement also comes along with vital minerals and vitamins.

It supports some particular type of bacteria known to improve your dog’s bowel function. This is a good daily supplement that helps in maintain a good appetite and good digestion. The supplement helps in maintaining stool consistency.

This dog probiotics is recommended if your pet has recently had any vet procedures. These include antibiotic therapy, deworming, or surgery. Your dog gets more comfort when on this supplement.

It is made with alfalfa. Alfalfa is a grass, not a grain, and is gluten-free. As per bag – the ingredients include Suncured Alfalfa Meal, Flaxseed, Hydrolyzed Yeast, Potassium Calcium Aluminum Silicate, Active Dry Yeast, Processed Grain By-Products, Calcium Carbonate, and Mineral Oil.

Others are Dried Aspergillus Oryza fermentation extract, Dried Bacillus subtilis fermentation product, Dried Lactobacillus acidophilus fermentation product, Dried Enterococcus faecium fermentation product, Dried Bifidobacterium longum fermentation product, Dried Bifidobacterium thermophilum fermentation product, zinc methionine hydroxy analogue chelate and natural flavoring.

3. Amazing Probiotics for Dogs

image of fish oil for dogs

Digestive enzymes for dogs help in breaking down processed foods. They assist with regular bowel movement. This supplement is good in maintaining a healthy intestine after using antibiotics. It eases diarrhea, constipation, gas and other infections.

In addition, it strengthens the immunity of your dog. This is one of the top dog probiotics, safe and proven available in the market today.

If your dog’s joint and coat are already healthy, all you will need is a single daily tablet to protect him and keep him healthy and happy. It comes with several ingredients that are good for reducing joint discomfort.

  • Easy to chew small-sized beef liver and bacon flavored tablets that pets love
  • Amazing Probiotics are the ideal solution if your dogs has a sensitive stomach or hates pills
  • They don't cause bad breath or harden into clumps
  • Safe when used with Omega 3 fish oil and vitamins
  • You can easily adjust the dosage as per the specific condition of your dog
  • Needs no refrigeration.

Using the good bacteria found in this quality probiotics for dogs’ product, you can easily restore the digestive balance of your dog. Your dog will love it as it contains no Avocado, Fish, Shark, Crab or Shrimp.

The natural anti-inflammatory formula used in this supplement remedies inflammation, rheumatoid arthritis, pain, and provides hip dysplasia relief. It is suitable for post antibiotics medicine treatment and boosts immune support for puppy and senior pets​

4. Petvi All Natural Digestive Health Supplement For Dogs

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This product is excellent in helping the immune system of your dog. This results in less scratching, itching and excessive hair shedding. Useful ingredients include Omega 3 fatty acid and flax seed, both which are good for coat and skin health.

The ingredients are particularly beneficial after your pet has been using antibiotic therapy or is suffering from other digestive disorders. PetVi is good when your pet has digestive health problems or lowered immunity. It is also excellent for pets that are fed on conventional diets or uncooked food.

  • Live beneficial micro-organisms are good for your pet’s immune and digestive system health.
  • Contains vital protein, trace minerals &vitamins
  • 100% pure natural sun-dried alfalfa hay, protein, trace minerals, and vitamins.
  • Omega-3 rich flaxseed is excellent for coat & skin health
  • Certified organic zinc boosts vascular health.
  • Promotes skin vitality, shiny coat, intestinal system and overall health
  • Made in the US and has zero preservatives
  • It easily mixes with your pet’s food
  • Backed by 120-day stress-free money-back guarantee!

Digestive Health Supplement from PetVi is carefully created using a powerful proprietary formula. It will improve the well-being and overall health of your pet. This product is very popular for weaning, itching, scratching, and excessive shedding. The PetVi formula uses only tested and trusted ingredients to promote digestive health, vitality & immunity, and overall health.

5. H3 Essentials Probiotics for Dogs

image of fish oil for dogs

Just like for us humans, the dog's digestive system of your dog plays a big role in his or her immune strength and overall health. Pets break down consumed food just like we do. This is by using digestive enzymes. You can support your dog’s digestive system using Delicious Chewy Chicken flavored soft chews from H3 Essentials.

When digestive enzymes for dogs are part of your pet’s food, it makes the process of digestion more smooth and efficient. The ingredients in H3 work by breaking down the food. This makes it easy the dog’s system to absorb all the useful nutrients. This is good in reducing stress on the dog’s internal organs.

The H3 ingredients assist a dog with diarrhea issues, bloating, and abdominal pain. Your pet also gets relief from problems associated with physiological stress. It may also help in preventing urinary tract infections. H3's special formula makes sure that the probiotics survive the process of manufacturing. They will also have a stable, long shelf life.

All products from H3 Essentials are tested independently for purity. They are manufactured in inspected facilities in the USA. This is for ensuring that your furry pal is getting delicious, safe, and beneficial soft chews.

What are Probiotics?

If at some point in life you have ever consumed a yogurt that has live cultures, then you might have eaten a probiotic even without your knowledge. There are naturally found in their billions within the gastrointestinal system of each animal, including humans. Their role is to assist in food digestion and make vitamins & nutrients get absorbed more easily. They also fight off any potential pathogens. And they bolster the body’s immune system.

From time to time, beneficial microbes are destroyed or damaged causing stomach upsets as well as a general health decline. To combat these types of dog health complications, pet probiotic producers are now microencapsulating their bacteria in order to protect them. Others are delivering a broad range of bacteria. These are contained in a single pet product towards improving effectiveness.

If your dog is suffering from an attack of diarrhea or seems to fall sick too often for no apparent reason, your vet may propose using probiotics.

Writing for, Wendy C. Fries notes that often dogs experience gastrointestinal problems due to their tendency of eating lots of things they shouldn't be taking. Truth be told; dogs have a tendency of eating all manner of nasty things when our attention is distracted. As a matter of fact, the second most common type of health issue affecting our dogs is gastrointestinal disorders (after skin conditions).

Benefits of Using Probiotics

Probiotics come with numerous benefits for dogs. It is, therefore, important to know about them, particularly if your dog is experiencing persistent gastrointestinal issues. By regularly giving your dog probiotic supplements, you will be restoring the digestive system’s healthy bacteria levels.

The health of the gastrointestinal (GI) tract of your dog also influences his cognition and brain health. When the dog’s intestines are unable to break down the eaten food adequately, the brain suffers as much as the dog’s immune system. Breaking down nutrients is important so that the essential ones can get absorbed faster and more easily.

Due to illness, medications, change in diet, and even stress, a microbial imbalance (dysbiosis) occurs. This allows the “good” bacteria living in the GI tract of your dog to be overwhelmed by “bad” bacteria. The first dysbiosis symptom in dogs is usually diarrhea, accompanied by bloating, flatulence, and audible stomach grumbling.

According to Doggy’s Digest, dogs suffering from dysbiosis are not likely to respond quickly to commands. They stare blankly ahead or they wander aimlessly appearing not to be aware of where they are or were going.

The work of probiotics is restoring the gut environment balance so that dog’s “good” bacteria are in abundance. They need to out-number the harmful bacteria within the intestines. Once they get released into the intestines, they start manufacturing vitamins and enzymes. These are vital towards optimizing the dog’s immune system functioning.

Probiotics also prevent the reproduction of “bad” bacteria so that the dog’s health can stabilize at the optimal level.

When Are Probiotics Used?

When dogs experience upset stomachs, usually, they will naturally turn to eating grass. When that doesn’t bring the desired results, your pet companion may need some other digestive remedy to the upset stomach.

When a pet is sick or stressed the balance that exists between the healthy “good” and disease-causing “bad” microbes may get disturbed. This can often lead to gas, cramping, diarrhea, and bad breath. To maintain a healthy desirable intestinal microbial balance, vets will normally prescribe probiotics.

Some digestive disorders triggers include:

  • Infection or imbalance in bacteria levels
  • Any changes that bring emotional stress like moving, boarding or losing a home. These are major causes of diarrhea for many dogs held in shelters.
  • Changes in diet can include abrupt menu changes or eating spoilt or disagreeable food.
  • Old age is another common factor.
  • Medications such as long-term steroids and antibiotics are known culprits that trigger diarrhea as they kill good bacteria.
  • When suffering from parasitic infections.

Medications such as long-term steroids and antibiotics are known culprits that trigger diarrhea as they kill good bacteria.

You may want to consider giving probiotics to your healthy dog if he or she has a tendency of developing diarrhea when in situations that are stressful. If for example, you are intending to board the dog or planning to take him to a dog show it makes sense to give him probiotics for several days in advance.

Pups that tend to develop diarrhea following training classes or after a visit to the vet clinic may also benefit from receiving several days of probiotics. This is a way of preparing them for the stressful event.

Choosing Probiotics for Dogs

Enhancing the gastrointestinal tract of your dog using a variety of probiotic strains makes sure that his intestines contain sufficient amounts of “good” bacteria. These give protection against all forms of “bad” bacteria.

While lots of holistic vets have been recommending the use of probiotics for years, it’s only recently that they are increasingly becoming part of mainstream vet animal care Not all dog probiotics are made alike as some types may be more effective compared to others.

When selecting dog probiotics, the following should be kept in mind:

  • The ingredients list must clearly identify the specific species of bacteria used. It must also indicate the type of strain.
  • The supplement label ought to sate the Colony-Forming Units (CFU). This is the approximate viable fungal or bacterial numbers that the product maker guarantees will be present in their supplement.
  • The manufacturer’s website or product packaging should have contact details. This is important in case you got any questions.
  • The probiotic ought to have an expiration or best-before date.
  • Storage conditions (excessive cold or heat) and time can diminish the usefulness of some types of bacterial stains.
  • Whenever possible, store the dog probiotics in a fridge.

Proper Dosage for Probiotics for Dogs

It is very important to know the potency of your dog probiotic. Understanding the precise number of beneficial bacteria contained per serving will potentially inform you about its potency or effectiveness. The higher the number of beneficial strains contained the better for your pet. They can respond more effectively to the broad range of stressors that could possibly affect the GI system of your pet.

If you are using dog probiotics to assist with digestion, they ideally ought to be taken along with meals. However, they might survive better when taken between meals. This is particularly important when taken along with liquid in diluting stomach acid. This helps move them faster into the dog’s digestive tract. Probiotics can be used long-term or short-term depending on specific pet condition.

It is important to follow the label instructions on dosage, particularly when using products that have been formulated for dogs. Some species of probiotic require refrigeration for them to remain viable and you should follow label storage recommendations.

Do Probiotics Cause Side Effects?

If planning on giving your dog probiotics, it is vital to be aware of all potential side effects. Similar to any type of medication, probiotics also have several side effects. However, the majority generally tend to be mild and only affect the pet’s digestive system. These are typically in the form of bloating or gas.

Rarely do dog probiotics cause any major side effects unless they are made using inferior bacteria strains. It can also happen if you are giving him a probiotic that was specifically not formulated for dogs.

Some dogs could experience what may appear to be a worsening of the existing health problems for between 24 and 72 hours after the initial probiotic supplement dosage. However, this situation gets quickly reversed once the gut flora of your dog gets the full benefits of having a healthy GI tract that has an abundance of “good” bacteria.

High-quality probiotics ought to come with accurate, Colony-Forming Unit information on the product label. It is the CFUs that inform you about the number of bacteria strains that any probiotic contains towards ensuring your dog is getting the right probiotic supplements.


Probiotics are living microorganisms just like the ones naturally found in the intestines. They help in maintaining a balance within the digestive tract of humans and animals. They also assist in preventing harmful pathogens from colonizing the gastrointestinal tract.

Your dog can benefit from probiotics when he is experiencing problems with digestion. When used together with digestive enzymes for dogs, the above supplements can lower your pet’s acidity levels. This reduces disease-causing bacteria in your pet’s gut.

Today, not even two of the best probiotics for dogs are alike. There are many probiotics for dog’s products in the market today. This makes selecting a suitable one for your pet friend very important.

Dog probiotics are comparatively a new trend in the pet health industry. The truth, however, is that they are an essential supplement recommended by many vets. Nevertheless, lots of cheap probiotics are generally unstable and many tend to lose their potential beneficial properties while still in the stomach before reaching the dog’s intestine.

This is because they are all not similar in their ingredients, what they deal with and how they react. All probiotic products must always indicate an expiry date. If you really want to give your dog the best that the pet supplement industry has to offer, choose one of the 5 products reviewed above and your dog will get better in no time. We only recommend what we trust!

For more information on other vitamins for dogs, refer to our article on calcium for dogs and other vitamins.​

A video from Dr. Becker about Probiotics for Dogs

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Probiotics For Dogs – How Do They Help My Dog?

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