Four Leaf Rover - Saccharomyces boulardii - Yeast-Based Probiotics For Dogs

Sale price$29.99



Saccharomyces boulardii is a healthy, probiotic yeast. Yeast-based probiotics are unique because they're not harmed by antibiotics, like other probiotics are. Studies also show that Saccharomyces boulardii can help ease digestive upset during antibiotic use. This makes Saccharomyces boulardii the perfect choice for dogs being treated with antibiotics or other medicines that harm gut bacteria. 

This friendly yeast delivers other gut benefits too. It helps maintain a healthy gut lining and studies show S. boulardii can influence parts of the immune system that maintain proper gut permeability. 

Product Info

While most probiotics are delivered in maltodextrin, our S. boulardii is made in small batches without any high glycemic ingredients. In its place, we use natural inulin from organic Jerusalem artichoke to keep the S. boulardii potent and thriving. 

Each batch is third party tested for quality and purity and carries a 30 day money back guarantee.


Active Ingredients per 1/2 tsp (1.6 g):

Saccharomyces boulardii .............................................  10 Billion CFU
Organic Inulin from Jerusalem 
artichoke ...................... 1056 mg

Inactive Ingredients: None (No maltodextrin, no fillers, no artificial ingredients)


Recommended to maintain a healthy intestinal tract and proper gut flora.

Give Saccharomyces boulardii orally daily, or as directed by your veterinarian. 

Refrigerate after opening. 

Body Weight Amount Per Day Daily Cost & Supply
1-25 lbs 1/8 tsp daily

 $0.25/day (120 day supply)

26-50 lbs

1/4 tsp daily

$0.49/day (60 day supply)

51-75 lbs 1/2 tsp daily

$0.99/day (30 day supply)

76 - 100 lbs 3/4 tsp daily

$1.36/day (22 day supply)

100 + lbs 1 tsp daily

$1.99/day (15 day supply)

Net Contents: 1.65oz (46.7 g)


Can Saccharomyces boulardii cause yeast infections?

Since S. boulardii is a probiotic yeast, people mistakenly assume it can cause or worsen yeast infections. This isn't true and, in fact, some studies show that it can reduce unhealthy yeast populations.

Can I give Saccharomyces boulardii if my dog is on antibiotics?

We believe you SHOULD give your dog this probiotic yeast when your dog is on antibiotics. Research shows it can help manage or prevent antibiotic associated diarrhea.

How is Saccharomyces boulardii different than Protect?

Protect is our everyday approach to managing toxins and maintaining a healthy gut lining. However, drugs and antibiotics can significantly challenge gut health and balance by indiscriminately killing both harmful and beneficial bacteria. Probiotic yeast are less susceptible to antibiotic and drug damage, making Saccharomyces boulardii the perfect choice when your dog is on antibiotics.  

Is Saccharomyces boulardii a natural part of my dog's gut flora?

Yes! S. boulardii is a normal part of the intestinal flora. One study showed that S. boulardii levels are higher in patients with unbalanced gut flora due to antibiotic use.

How quickly does Saccharomyces boulardii work?

Studies show that S. boulardii can populate within half an hour when given orally and steady state concentrations are achieved within 3 days. S. boulardii also stays in the gut for 3-5 days, which is much longer than most probiotics.

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