10+ Best Probiotics for Dogs to Improve Digestive Health and Immunity

Probiotics add good bacteria to your dog’s digestive system, helping balance gut microbes for better digestion and overall health. Lots of pet owners turn to probiotics when their dogs have diarrhea, upset stomach, or just need an immune boost.

You’ll find dog probiotics as powders, chews, or capsules. Each type has different bacteria strains, dosages, and extra ingredients. The right pick really depends on your dog’s size, health needs, and honestly, how easy it is to give.

When you’re shopping, check the type and amount of live bacteria strains. See if the product’s been tested for quality and if it holds up without refrigeration. We sifted through a bunch of options to find probiotics that actually work and don’t make daily routines a pain.

Best Probiotics for Dogs

We dug into a bunch of probiotics to find the ones that really help dogs’ digestion. The ones below support a healthy gut, even out immunity, and are easy enough to give to dogs of all shapes and sizes. Here’s our shortlist.

Zesty Paws Probiotics

We saw real improvement in our dogs’ digestion and gut health with these chews, and they didn’t turn their noses up at them.

Pros

• Chicken flavor most dogs seem to like
• Six probiotic strains for solid coverage
• Includes pumpkin and enzymes for easier digestion

Cons

• Some picky eaters may not love the texture
• Chews harden in the fridge
• Results can take a couple weeks to show

Our dogs gobbled these up like treats, so dosing was easy. The chicken flavor isn’t too strong, which helps. After a couple weeks, we saw less gas and fewer bouts of diarrhea.

The six-strain blend and digestive enzymes seem to keep gut flora in check. Our dogs looked more comfortable and had better bowel regularity. The pumpkin’s a nice touch for dogs with sensitive stomachs.

Watch out for chew texture—if you store them cold, they get stiff, but at room temp, they’re soft and easy to break up. All in all, these balance digestive support with taste, so most dogs will go for them.

ZEBORA Dog Probiotics

This probiotic chew worked well for our dog’s digestion and even seemed to help her skin. Plus, she liked eating them.

Pros

• Pumpkin flavor that dogs eat without fuss
• Probiotics, enzymes, and omega-3 all in one
• Supports digestion, shiny coats, and allergy relief

Cons

• A bit expensive
• Takes a few days to settle on the right dose
• Not every dog responds quickly

The soft chews smell pretty natural and our dog took them like treats—no drama. We appreciated the pumpkin and enzymes for a little extra digestive help.

After about a week, we saw more regular bowel movements and her skin looked less irritated. The omega-3s seemed to help with dryness and shedding, and allergies calmed down a bit.

The resealable bag kept things fresh, and overall, the product felt high quality. If you want more than just basic probiotics and don’t mind paying a bit extra, these are worth a shot.

FortiFlora Probiotic for Dogs

This powder is a go-to for digestive support, especially if your dog’s dealing with diarrhea.

Pros

• Vets recommend it all the time
• Mixes right in with food
• Helps with digestion and immune health

Cons

• Costs more than some others
• Single-use packets create extra trash
• Some dogs need time to get used to the taste

We found FortiFlora super easy to use—just sprinkle the powder on food and you’re done. It’s reassuring knowing vets trust it.

Our dogs bounced back from upset stomachs pretty quickly. We noticed firmer stools and less gas, so something’s working.

Yes, it’s pricier, but the results and added immune support make it worth considering if your dog has regular digestive upsets.

Zesty Paws Probiotics

These chews made our dogs’ digestion smoother and seemed to calm their stomachs on rough days.

Pros

• Soft chews most dogs like
• Six probiotic strains and enzymes for digestion
• Supports immune and gut health for all sizes

Cons

• Full dose might be strong for sensitive dogs
• Chews get sticky in warm weather
• More expensive than plain powders

The pumpkin flavor made these easy to give. Our dogs liked them, so daily dosing wasn’t a struggle. We started with half a chew to avoid any stomach upset.

After a week, we saw less gas and fewer loose stools. The blend seems balanced and didn’t cause any issues.

Overall, these chews help maintain gut health. For dogs with sensitive stomachs or occasional digestive problems, they’re a good option to try.

Penpen Probiotics

These chews are easy to feed and help with digestion and gut health, using natural ingredients.

Pros

• Soft beef-flavored chews dogs seem to love
• Probiotics, prebiotics, and enzymes all in one
• Gentle for sensitive stomachs

Cons

• Some dogs need a slow intro
• Only comes in beef flavor
• Not a substitute for your vet’s advice

We found these Penpen chews simple to use—our dog took them daily without any issues, and the beef flavor helped. Way easier than powders or pills.

The blend helped with digestion and eased stomach discomfort. After a few weeks, our dog had less gas and more energy. Ingredients like pumpkin and papaya seemed to help gut balance and even coat shine.

If your dog’s sensitive, start slow to avoid minor stomach upsets. These work best as part of a full care routine, but they’re effective and easy for most dogs.

TzzyiC Probiotic Chews for Dogs

These chews help with digestion and overall health using natural ingredients, and they’re easy to add to your dog’s routine.

Pros

• Settles upset stomachs and aids digestion
• Chicken flavor dogs seem to like
• Supports immunity and freshens breath

Cons

• Large pack might be too much for small dogs
• Soft chews won’t suit every dog
• A bit pricier than some options

These chews quickly eased our dog’s gas and bloating. He liked the taste, so giving them was hassle-free. His energy picked up, probably because he felt better.

The ingredient list is mostly natural, with pumpkin and prebiotics for gut health. No wheat or soy, which is great for sensitive pups, and no artificial colors or animal protein.

We also noticed fresher breath and less skin itchiness. They’re suitable for all sizes and ages, making them a convenient daily supplement.

Petsology Dog Probiotics

These chews help with digestion and skin issues, combining probiotics, enzymes, and prebiotics.

Pros

• Helps with diarrhea, gas, and constipation
• Reduces itching and supports skin health
• Dogs enjoy the taste

Cons

• Can take several weeks to notice full benefits
• Large pack may be too much for small dogs or newbies
• Costs more than basic probiotics

We tried these chews when our dogs had digestive trouble. We saw less gas and better stools pretty fast. The skin and ear support was a bonus.

Our dogs liked the flavor, so daily dosing was easy. The chew format is great for busy days when pills just aren’t going to happen.

It did take a few weeks to see the full effect, so patience helps. For small dogs or first-timers, the big supply might feel like too much. Still, we thought the results justified the price.

Zesty Paws Probiotics

If you want to help your dog’s digestion and immune system, these chews are a pretty tasty way to do it.

Pros

• Six probiotic strains for gut support
• Pumpkin and papaya add extra digestive help
• Most dogs like the flavor—giving them feels like handing out treats

Cons

• Some dogs need a slow intro to the full dose
• Chews are on the soft side and can get a bit messy
• Costs a bit more than basic probiotic options

The pumpkin flavor makes these easy to use—our dogs took them without a second thought, which took the hassle out of daily doses.

After a few weeks, the six probiotic strains seemed to ease gas and occasional diarrhea. We even noticed a slight improvement in their coats and energy.

Start with half a chew and see how your dog reacts before bumping up. Some of ours adjusted right away, no tummy troubles. It’s a handy addition to the routine.

Proviable by Nutramax

Proviable offers a mix of probiotic strains and prebiotics in a super convenient form, making it a go-to for gut health.

Pros

• Several strains of helpful bacteria
• Prebiotics to help the probiotics thrive
• Simple to sprinkle on food or give as chewables

Cons

• You have to open capsules to sprinkle—bit of a hassle
• Some dogs turn their noses up at the taste
• Price is a notch above some other probiotics

We saw Proviable help our dogs after food changes or stressful times. Just sprinkle the powder on meals—no need to fight your dog over pills.

With billions of good bacteria and prebiotics, it helps create a healthier gut balance, not just a quick fix. After about a week, stools firmed up and digestive issues eased.

Nutramax’s vet backing and research gave us peace of mind about quality. If you’re after a dependable, daily probiotic for your dog, this one’s worth a look.

Zebora Dog Probiotics

Zebora’s chews offer real digestive support and seem to help with common problems like itching and upset stomachs—works for dogs of all ages.

Pros

• Blends probiotics, prebiotics, enzymes, and omega oils for gut and skin
• Soft chews—easy for seniors or picky dogs
• Natural ingredients like pumpkin and chicken for better taste

Cons

• Some dogs need a little time to adjust
• Chews might be too big for tiny pups
• A few dogs need more than one dose a day

After a few weeks, our dogs’ digestion improved—less stomach trouble and better stool consistency. The pumpkin and omega oils also seemed to calm down itching.

Soft chews made it easy—our dogs liked the chicken flavor and thought they were treats. No daily drama.

Zebora combines probiotics with other helpful extras for immune and digestive health. We like the ingredient mix and how simple it is to feed, so it’s become a regular part of our dogs’ care.

Nutramax Proviable

Nutramax Proviable is a steady, trusted probiotic for both dogs and cats who need digestive support.

Pros

• Multiple probiotic strains for gut balance
• Prebiotics to help good bacteria grow
• Just open the capsule and sprinkle on food

Cons

• You have to open the capsules
• Some pets aren’t fans of the taste
• Costs more than basic options

We used Proviable for pets with sensitive stomachs, and the probiotic/prebiotic combo seemed to help digestion over time. We noticed improvements after diet changes or mild stomach upset.

Giving it is easy—just sprinkle the powder over food. Most pets ate it without fuss, though a couple were a little picky. It works for both cats and dogs, which is handy.

The price is higher than some, but the vet-recommended formula and quality ingredients gave us confidence in what we were giving our pets.

Pet Naturals Daily Probiotic

If your dog needs gut support, these chews are easy to give and most dogs seem to love the taste.

Pros

• Dogs like the flavor and soft chew
• Helps with digestion, gas, and bloating
• Has prebiotics and digestive enzymes for gut health

Cons

• Price is a bit higher than some
• Takes a few days to see results
• Doesn’t always help with allergy symptoms

Our dogs took to these chews right away—they taste like treats, so giving them was no problem, even for picky eaters. The soft texture is great for small dogs.

After about a week, we saw less gas and better-looking stools. We liked that it includes both probiotics and prebiotics for a balanced gut.

No fillers or artificial stuff, which is good if your dog has a sensitive stomach. The price is a little up there, but the jar lasts a while. If you want a vet-formulated probiotic that covers digestion and immune support, this one’s a safe bet.

Buying Guide

When we shop for dog probiotics, we look for a few key things. First, check the bacteria types—different strains help different parts of the digestive system.

Next up, CFU count. That’s colony-forming units—a fancy way to say how many live bacteria are in each dose. More isn’t always better, but it should fit your dog’s needs.

The form matters too. You’ll find powders, capsules, chews, or treats. Pick something your dog will actually eat every day.

Don’t forget storage. Some need the fridge, others are fine on the shelf. Choose what fits your routine and keeps the probiotics fresh.

Always check the ingredient list. Avoid fillers or weird additives, especially if your dog is sensitive.

And honestly, talk to your vet before starting anything new. They’ll help you pick what fits your dog’s health and diet.

Frequently Asked Questions

We dig into specific probiotic products, strains, and uses for dogs. We also touch on immune health, allergies, dosing, and side effects.

What are the top-rated probiotics for canine digestive health?

We usually point to brands like Purina FortiFlora, Nutramax Proviable, and Vet’s Best Probiotic. They’ve got trusted strains and solid reviews from vets and dog owners.

Are there specific probiotic strains that are more beneficial for dogs?

Definitely. Strains like Enterococcus faecium, Lactobacillus acidophilus, and Bifidobacterium animalis are known to help with dogs’ digestion and gut health. These support a healthy balance of good bacteria.

How can probiotics improve a dog’s immune system?

Probiotics boost the gut’s natural barrier and help keep bad bacteria in check. A healthy gut makes immune responses stronger, so dogs can fight off infections and illness more easily.

Can probiotics help with a dog’s allergy symptoms?

Sometimes, yes. Probiotics may lower inflammation tied to allergies and help balance the immune system. They might also improve the skin barrier, but results can really vary by dog.

What is the recommended dosage of probiotics for dogs?

It depends on your dog’s size and the product. Most suggest 1 to 5 billion CFUs per day, based on weight. Always follow the label or ask your vet for the safest advice.

Are there any side effects associated with giving dogs probiotics?

Most dogs do just fine with probiotics, though sometimes you might notice a little gas or mild diarrhea in the beginning. If your dog has a strong reaction or anything seems off, it’s best to stop giving the probiotics and check with your vet right away.