Skip to product information
1 of 6

Animal Biome

DoggyBiome S. boulardii + FOS Powder

DoggyBiome S. boulardii + FOS Powder

Regular price $49.00 USD
Regular price Sale price $49.00 USD
Sale Sold out
Shipping calculated at checkout.

Choose a purchase plan:

A probiotic and prebiotic powder for dogs, designed to improve stool consistency, reduce diarrhea, promote healthy skin, and support gut function. Recommended for daily use.

DoggyBiome™ S. boulardii + FOS Powder, with active ingredients Saccharomyces boulardii and Fructooligosaccharides (FOS), rebalances and improves your dog’s digestive health. We recommend mixing the powder into your dog’s food at mealtime.

DoggyBiome™ S. boulardii + FOS Powder is available in two sizes:

    • A 30g/4oz jar that is recommended for smaller dogs (35lbs or less) and comes with a 0.6g scooper. Each 0.6g scoop of powder contains 6.6 Billion CFUs (colony-forming units) of active Saccharomyces boulardii and 330mg of Fructooligosaccharides (FOS). Each 30g jar has 25 servings for dogs weighing up to 35 pounds.
    • A 60g/6oz jar is recommended for larger dogs (over 35 lbs) and comes with a 1.2g scooper. Each 1.2g scoop of powder contains 13.2 Billion CFUs of active Saccharomyces boulardii and 660 mg of Fructooligosaccharides (FOS). Each 60g jar has 30 servings for dogs weighing up to 50 pounds.



  • Improves stools frequency
  • Reduces diarrhea (including antibiotic-caused diarrhea)
  • Promotes healthy skin
  • Combats yeast overgrowth
  • Supports gut function by nourishing beneficial bacteria
  • Recommended by veterinarians

About Saccharomyces boulardii

S. boulardii is a special probiotic that’s a strain of yeast, not bacteria. Studies have shown that S. boulardii is safe and effective for dogs and that it can prevent and reduce diarrhea from multiple causes. It has anti-inflammatory properties. As a probiotic, it is especially helpful for regrowing gut microbe populations that have become imbalanced and for promoting healthy skin.

And unlike bacterial probiotics, S. boulardii isn’t affected by antibiotics, so it can also be used during antibiotic treatment to help with the digestive side effects that antibiotics often cause. Studies have shown that when S. boulardii is given along with an antibiotic, dogs are much less likely to develop diarrhea during or after the course of medication. 

S. boulardii is also resilient to stomach acid, so when it reaches the intestines, it’s still intact and alive, while many bacterial probiotics die in the stomach and never make it to the gut. Once in the gut, S. boulardii provides food for beneficial microbes, supporting a healthy, diverse microbiome.

About Fructooligosaccharides (FOS)

Fructooligosaccharides (FOS) are tiny, soluble fibers. The raw material from which the FOS in our S. boulardii + FOS is produced is Non-GMO beet sugar*. These particular fibers are prebiotic, meaning that they are the preferred food of beneficial microbes like the ones in your pet’s gut. Making sure all the beneficial members of the gut microbiome get enough of the right food is crucial not just for healthy digestion but also for a strong immune system, healthy skin, and even a happy mood. Studies in dogs have shown that supplementation with FOS improves both gut health and immune functions.

*The geographical origin of the Non-GMO beet sugar is as follows: Netherlands, Poland, Denmark, France, Germany, U. K.


Direction for Use


Standard Shipping 3-5 business days

View full details