The 8 Best Probiotics for Dogs, According to Veterinarians
How do you choose a probiotic for your dog? We tapped the experts to recommend supplements designed to improve your pup's overall digestive system and health.
Every item on this page was chosen by a Woman's Day editor. We may earn commission on some of the items you choose to buy.
As a pet parent, you want the best for your furry friend. From investing in the best harnesses for puppies to doing tons of Googling about common dog behaviors to buying the best dog toothpaste to keep them fresh and healthy, you'll do pretty much anything for your dog. And that includes making sure their digestive health is taken care of. If you've noticed symptoms like diarrhea or loose stools or if they are prone to allergies, obesity, or anxiety, you may want to try one of our vet-recommended best dog probiotics to see if this can help your pup feel better and become healthier.
So what are probiotics for dogs, exactly? The simple answer is that they boost good bacteria in your dog's gut. “Having good bacteria in the digestive tract is a direct correlation to your dog’s immune system and overall health,” says veterinarian Dr. Gary Richter, M.S., D.V.M., C.V.C., C.V.A., the founder of Ultimate Pet Nutrition. In addition to boosting the good bacteria, probiotics discourage the growth of harmful, illness-causing bacteria. “Probiotics help maintain an appropriate balance,” Dr. Richter adds. “They help to keep the immune system healthy which can lower inflammation and pain.”
The best probiotics for dogs in 2024:
Dr. Richter, along with veterinarian and writer at Native Pet Dr. Juli Goldstein, D.V.M., gave us all the details on the benefits of probiotics for dogs, which dogs are the best candidates, and which probiotics vets and dog parents swear by.
Purina Pro Plan Veterinary Diets FortiFlora Probiotics for Dogs
Purina Pro Plan Veterinary Diets FortiFlora Probiotics for Dogs
Pros
- Comes in easy-to-use sachets
- It's liver flavored, which is appetizing to most dogs
- It's formulated with protein and fiber
Cons
- As a powder, it has the potential to be messier
The Purina FortiFlora Probiotics for Dogs are beloved by over 30,000 Amazon shoppers — and vets love them, too! "This is a trusted veterinary brand that's heavily researched for efficacy," Dr. Goldstein tells us. "It's easy to store and distribute, as it comes in single serving packets."
Quantity: 30 count, 45 count, or 90 count
Form: Chewable tablets or Powder Sachets
Key Ingredients: Enterococcus faecium, L-ascorbyl-2-polyphosphate (source of vitamin C), brewer's dried yeast, vitamin E supplement, zinc proteinate, beta-carotene, salt, manganese proteinate, ferrous sulfate, copper proteinate, calcium iodate, sodium selenite
Native Pet Probiotics & Prebiotic Dog Supplement
Pros
- It's made with minimal ingredients
- It includes both pre- and probiotics
- It's rich in fiber
Cons
- It's a powder, so it's not as convenient
- You have to measure out each serving
Over 1,500 Amazon shoppers agree: The Native Pet Vet-Formulated Probiotics & Prebiotic Dog Supplement is a pooch fave. "This powder is veterinary formulated and unique in that it has added prebiotic fiber to help prepare your pup's gut and make it more hospitable to healthy bacteria," says Dr. Goldstein. "It’s also organic with clean ingredients, which is especially helpful for pets with sensitive stomachs or food allergies."
In addition to being the best powder dog probiotic supplement, this Native Pet Probiotic is also the most artfully designed, making it less of an eyesore if you choose to keep it out on your counter.
Quantity: 4.1 oz tin, 8.2 oz tin, or 16.4 oz tin
Form: Powder
Key Ingredients: Pumpkin seed powder, beef broth powder, Jerusalem artichoke powder, probiotic blend
Nutramax Proviable-DC Capsules Digestive Supplement for Cats & Dogs
Nutramax Proviable-DC Capsules Digestive Supplement for Cats & Dogs
Pros
- The multi-strain probiotic supplement is clinically researched
- It's formulated with both pre- and probiotics
- It comes in capsule form
Cons
- The capsules are made with animal byproduct
The Nutramax Proviable-DC Capsules are unique in that they can be fed in capsule form or split open to be sprinkled on as a powder. It's partially because of this that over 8,500 Amazon shoppers have awarded the capsules their five-star seal of approval — and Dr. Goldstein has too. "Another trusted veterinary brand, [these capsules] contain seven bacteria strains and are helpful for dogs who are not a fan of powders," she says. Though, if your pup also doesn't eat capsules freely, you may want to add a bag of the Greenies Peanut Butter Capsule Pockets to your cart, too.
Quantity: 30 count or 80 count
Form: Capsule
Key Ingredients: Enterococcus faecium, Streptococcus thermophilus, Lactobacillus acidophilus, Lactobacillus bulgaricus, Lactobacillus casei, Bifidobacterium bifidum, Lactobacillus plantarum
Zesty Paws Probiotic Bites Pumpkin Flavored Soft Chews
Pros
- The bites are made with digestion-supporting pumpkin
- They're made with six probiotics
- A jar includes 250 bites
Cons
- Not all dogs enjoy the taste of pumpkin
If your pup isn't a fan of powders or capsules, you can trick them into taking their daily supplement with the Zesty Paws Probiotic Bites, which are designed with a tasty pumpkin flavor. In addition to being ripe with good bacteria, these probiotics are plentiful. A jar contains 250 bites and if you have a dog that weighs 25 pounds or less, that means the container will last for over eight months. Needless to say, it's no wonder over 21,000 Amazon shoppers have given them a five-star review.
Quantity: 10 count, 50 count, 90 count, 180 count
Form: Soft chew
Key Ingredients: Pumpkin, papaya, Lactobacillus Acidophilus, Lactobacillus Plantarum, Lactobacillus Brevis, Lactobacillus Fermentum, Lactobacillus Lactis, 2 Billion CFU, flaxseed meal, natural vegetable flavoring, oat flour, palm oil, powdered cellulose, rice bran, rice flour, sorbic acid (natural preservative), vegetable glycerin and vegetable oil
Finn Digestive Prebiotic & Probiotic Supplement For Dogs
Finn Digestive Prebiotic & Probiotic Supplement For Dogs
Pros
- They're formulated with a tasty beef liver flavor
- A jar includes 90 soft chews
- They're formulated with probiotics, as well as prebiotics and fiber
Cons
- They have a pumpkin base, which not all dogs will love
The Finn Digestive Prebiotic & Probiotic Supplement is formulated with a mouthwatering beef liver flavor that your pup won't be able to resist. When purchased on Amazon, shoppers can Subscribe & Save to make the most of the 90-count jars.
Quantity: 90 count
Form: Soft chews
Key Ingredients: Lactobacillus Acidophilus, L. Fermentum, L. Reuteri, L. Plantarum, Bifidobacterium Bifidum, L. Casei Subsp. Casei, 3B CFU, pumpkin, inulin, Fructooligosaccharides (FOS) brewer's yeast, tapioca starch, vegetable glycerin, purified water, sunflower lecithin, natural cheese, safflower oil, natural bacon flavor, natural beef liver, organic honey, ascorbic acid, mixed tocopherols, natural preservative
Fera Pet Organics Probiotics with Organic Prebiotics for Dogs & Cats
Fera Pet Organics Probiotics with Organic Prebiotics for Dogs & Cats
Pros
- It's organic
- It's flavorless and odorless
- It's a great value
Cons
- It's a powder, so it's less convenient
If your dog is particularly picky, you'll want to be as inconspicuous as possible. The Fera Pet Organics Probiotics with Organic Prebiotics for Dogs & Cats is the best option, as it's flavorless and odorless, so their meals will seem like business as usual. Plus, if you hold ingredient standards on a pedestal, these dog probiotics are pretty much as good as it gets. They're even considered Climate Pledge Friendly on Amazon, meaning that they're made with highly sustainable manufacturing practices.
Quantity: 60 count
Form: Powder
Key Ingredients: Fos (Fructooligosaccharides), organic inulin derived from agave, Lactobacillus Acidophilus, Lactobacillus Casei, Saccharomyces Cerevisiae, Lactobacillus Plantarum, Bifidobacterium Infantis, Enterococcus Faeciuim, Lactobacillus Bulgaricus, Bifidobacterium Bifidum, Bifidobacterium Longum, Lactobacillus Reuteri, Lactobacillus Brevis
PetLab Co. Probiotics for Dogs
Pros
- They're pork flavored to be extra enticing
- They're made with eight strains of healthy bacteria
- They're made in the USA
Cons
- Not for puppies
Best for pups who go hog wild over treats, the PetLab Co. Probiotics for Dogs are designed with a tantalizing pork flavor that your pooch will swoon over. The only downside is that they're specifically designed for dogs over six months of age, so they're out of the question for puppies.
Quantity: 30 count
Form: Soft chews
Key Ingredients: Bacillus coagulans, Lactobacillus reuteri, Bifidobacterium bifidum, Bifidobacterium longum, Lactobacillus brevis, Lactobacillus casei, Lactobacillus plantarum, Streptococcus thermophilus), pumpkin, honey, inulin (agave), FOS - fructooligosaccharides (Saccharum Officinarum), ascorbic acid, cane molasses, coconut glycerin, dried brewers yeast, dried whey, lecithin, liquid smoke flavor, mixed tocopherols, pork gelatin, salmon oil, spray dried pork liver, tapioca starch.
PetHonesty Digestive Probiotics Duck Flavored Soft Chews Probiotics Supplement for Dogs
PetHonesty Digestive Probiotics Duck Flavored Soft Chews Probiotics Supplement for Dogs
Pros
- They have six billion colony forming units (CFUs) probiotics per serving
- Free of wheat, corn, and soy
Cons
- It can take a few months for product to start working
These dog probiotics have more than 2000 five-star reviews from happy pet parents on Chewy. Reviewers say that even their picky eaters will happily chow down on these probiotic supplements, which come in duck and pumpkin flavors. They're designed to be used daily in order to help ease symptoms like constipation, gas, and upset stomach. These probiotics are also formulated with enzymes to help your pup digest key nutrients.
Quantity: 14 count, 90 count
Form: Soft chews
Key Ingredients: Pumpkin, Lactobacillus Acidophilus, Lactobacillus Plantarum, Lactobacillus Brevis, Lactobacillus Fermentum And Lactococcus Lactis With FOS, amylase, protease, lipase, cellulase, lactase, bromelain, greek yogurt, chicory root
How do I choose a probiotic for my dog?
To choose the number-one probiotic for your dog, look for the following:
✔️ The Number of Bacterial Strains Present: Probiotics for dogs are only as beneficial as the number of bacterial strains within them. While many supplements have one or two strains (which Dr. Goldstein says can be helpful), she recommends opting for those with four or more to achieve optimal gut health.
✔️ Formulas Rich in Fiber: According to Dr. Richter, probiotics are even more effective when paired with prebiotics and digestive fiber. “[It gives the bacteria] something to feed on and replicate, continuing to create healthier bacteria and thus making the probiotic more effective,” he explains.
✔️ Potency Per Serving: Even with multiple strains of probiotics in a supplement, it could lack potency. “Probiotics are measured by CFUs or colony forming units — the optimal daily range for dogs is between 1 billion and 10 billion CFUs per day,” Dr. Goldstein says, noting to prioritize probiotics for dogs that offer billions of CFUs.
✔️ A GMP-Certified Facility: You want your pup’s probiotic supplements to be made in a facility with good manufacturing practices (GMP). “These facilities take steps to ensure that the products are safe, potent, and pure,” Dr. Goldstein says. “Often this is not included on the label, so a call to the manufacturer may be needed to gather this information.”
FAQ
How do I know if my dog needs a probiotic?
While all dogs can benefit from probiotics, given they can help with everything from digestion and chronic pain to joint issues and a sleek coat, Dr. Richter says that those with stomach issues experience the most noticeable improvement post-probiotic. Dr. Goldstein adds to this, noting that she frequently recommends probiotic supplements for any of her patients who are experiencing any type of gastrointestinal distress, especially diarrhea. “But probiotics have numerous benefits for dogs in a variety of situations, especially overall immune health because more than 70% of your dog’s immune system is in their gastrointestinal tract,” she adds. “Other situations where I may recommend a probiotic include pets with anxiety, allergies, irritable bowel syndrome, obesity, or other immune disorders.”
What are the benefits of probiotics for dogs?
As previously mentioned, probiotics boost the healthy bacteria in your dog's gut, which in turn boosts their overall health and prevents gastrointestinal issues, among other common ailments, like joint pain.
Rebecca Ravee Norris is a freelance writer with a decade's worth of lifestyle media experience. Based out of the Washington metropolitan area, she covers everything from beauty and wellness to style and celebrity news. She is a graduate of George Mason University and has a B.A. in Media: Production, Consumption, and Critique, along with a minor in Electronic Journalism. When she's not writing, she can be found with her beloved Jack-Chi, Cash, working through reps at the gym, dreaming up her next home decor project, testing a new recipe, getting lost in the pages of a book, or catching up on her favorite shows.
Jamie Ballard (she/her) is a freelance writer and editor who covers news, lifestyle, and entertainment topics, including sex and relationships, TV, movies, books, health, pets, food and drinks, pop culture, shopping, and personal finance. She regularly contributes to Cosmopolitan, Woman’s Day, Good Housekeeping, and YouGov, among other publications. When she’s not working, you can find her running, traveling, or scrolling TikTok. Follow her on Twitter.
Watch Next
30 Interactive Dog Toys for Small and Large Pups
40 Best Gifts for Dogs
30 Paw-fect Gifts for Dog Owners and Lovers
25 Easy Dog Treats You Can Make at Home
