Florastor Kids – What is it?

Florastor Kids Contains Saccharomyces boulardii

Florastor Kids is a children’s probiotic supplement, which contains the probiotic yeast Saccharomyces boulardii (S. boulardii). It is suitable for children aged two months and older. The product comes in a handy flavored powder, which can be added to beverages (including infant formula) as well as soft foods.


Florastor kids contains the following ingredients:

  • S. boulardii

  • Lactose

  • Fructose

  • Colloidal anhydrous silica

  • Tutti-frutti flavor

Each serving contain 5 billion colony forming units (CFUs)1 of S. boulardii.

How Can Florastor Kids Help My Child?

Although the probiotic yeast, S. boulardii, which is found in this product is not a natural component of gut flora, S. boulardii has been extensively studied and is thought to be useful in the treatment of:

  • Antibiotic-associated diarrhoea2.

  • Infectious diarrhoea, including traveller’s diarrhoea3 and acute diarrhoea in children4,5.

  • Inflammatory bowel disease (IBD): ulcerative colitis and Crohn's Disease6,7.
  • Clostridium difficile (also known as C. difficile or C. Diff) diarrhea8 and Clostridium difficile colitis (C. diff colitis), also known as C. difficile disease (CDD) and Pseudomembranous colitis (PMC)9,10.

  • Irritable bowel syndrome (IBS)11.

If you are interesting in trying your child on a product containing S. boulardii, for example Florastor Kids, be sure to ask your pediatrician before you begin.


Florastor Kids is very easy to administer to your child. You simply dissolve it in cold beverages such as water or juice or mix it into soft foods such as yogurt or applesauce. Your child will not even notice the hidden probiotic supplement! Taking Florastor Kids is Thought to Bring Numerous Advantages

The product also contains a good number of probiotic yeast (5 billion CFU per serving).

Just like the adult version of this product, which is known simply as Florastor, this product has a very long shelf life of approximately three years. If you’ve got spare sachets left over once your symptoms have cleared, then the long shelf life means you can save your stock for future use.

Florastor Kids is intended to be stored at room temperature (25°C or 77°F) in a dry environment. With no requirement for refrigeration, this makes it ideal for taking on vacation.

Another good reason to take this product with you on trips away is that it is especially useful for cases of traveler’s diarrhea. You can even give it to your child as a preventative therapy, starting approximately four days prior to your trip and finishing treatment four days after your vacation ends.

Florastor Kids is also useful as an adjunct therapy to antibiotic treatment. The product contains probiotic yeast as opposed to probiotic bacteria and thus unlike the majority of probiotic supplements, it remains unaffected and potent during antibiotic therapy. It is thus is able to support the digestive microflora during antibiotic treatment thereby lessening the chances of your child developing antibiotic-associated diarrhea.

Finally and very importantly the probiotic yeast contained in Florastor Kids has been extensively studied in scientific trials. Good evidence (see section above) has been found for its efficacy.


Florastor Kids contains a number of additional ingredients, which some children may find difficult to tolerate. It is also expensive compared to many other probiotic supplements. To learn how to accurately compare the cost of probiotic supplements, see our cost comparison guide.

Our Evaluation

Florastor Kids contains the probiotic yeast Saccharomyces boulardii

We have given this product a four-star rating. We believe it’s an excellent product but it just falls short on its high price compared to other probiotic supplements and its additional ingredients, which may make it unsuitable for sensitive children.

Where Can I Buy this Product?

We have partnered with Amazon.com to provide you with a special store for children's probiotic supplements. You can buy this product from our store.

Florastor Kids is also widely available from other on-line probiotic retailers. Click here to read our guide to the best Internet probiotic suppliers.

You can also buy this product over-the-counter at most retail chain pharmacies.


1.Colony forming units (CFUs) are a measurement of the number of viable bacteria contained in a product.

2.Surawicz CM et al; Prevention of Antibiotic-Associated Diarrhea by Saccharomyces Boulardii: a Prospective Study;Gastroenterology; 1989 Apr;96(4):981-8

3.Kollaritsch H et al; Prevention of Traveler’s Diarrhoea. Comparison of Different Non-Antibiotic preparations; Travel Med In; 1989; 9–17

4.Centina-Sauri G & Sierra Basto G Therapeutic evaluation of Saccharomyces boulardii in children with acute diarrhea; Ann Pediatr;1994; 41: 397–400

5.Kurugöl Z & Koturoğlu G; Effects of Saccharomyces Boulardii in Children with Acute Diarrhoea. Acta Pediatr; 2005 (1); 44–7

6.Guslandi M et al; Saccharomyces Boulardii in Maintenance Treatment of Crohn’s Disease; Dig. Dis. Sci; 2000. 45 (7): 1462–4

7.Guslandi M et al; A Pilot Trial of Saccharomyces Boulardii in Ulcerative Colitis, Eur J Gastroenterol Hepatol; 2003; 15 (6): 697–82

8.Castagliuolo I et al; Saccharomyces Boulardii Protease Inhibits Clostridium Difficile Toxin A Effects in the Rat Ileum; Infect Immun; 1996 December; 64(12): 5225–5232

9.Surawicz CM et al; Treatment of Recurrent C. Difficile Colitis with Vancomycin and Saccharomyces Boulardii; Am. J Gastroenterol; 1989; 84: 1284-1287

10.Surawicz CM et al, The Search for a Better Treatment for Recurrent Clostridium Difficile Disease: Use of High-Dose Vancomycin Combined with Saccharomyces Boulardii; Clin Infect Dis; 2000;31(4):1012

11.Maupas J et al; Treatment of Irritable Bowel Syndrome with Saccharomyces Boulardii: a Double Blind, Placebo Controlled Study; Medicine Chirurgie Digestives; 1983; 12(1): 77–9

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