8 Best Probiotics for Dogs to Improve Digestive Health, According to Veterinarians

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. Juli tells us. "It's easy to store and distribute, as it comes in single serving packets."

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. Juli, who is a writer at Native Pet. "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.

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 5-star seal of approval — and Dr. Juli 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.

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 5-star review.

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.

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.

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.

Last but not least, we have the Wild One Gut Probiotic & Digestive Aid. These probiotic dog chews are made with just four ingredients, making them great for pups with more sensitive tummies.