Frequently Asked Questions

Product Benefits

  • Helps restore and maintain digestive balance*
  • Helps protect against multiple GI issues*
  • Supports immune health*
  • Helps flush out bad gut bacteria and boost the good*
  • Helps destroy toxins from harmful bacteria*
  • Helps increase digestive enzymes*

Visit the Why Florastor page to learn more.

70% of the immune system is in the gut.  Florastor helps flush out bad gut bacteria and boost the good to restore and maintain digestive balance thereby supporting immune health.*

Florastor also uniquely stimulates the secretion of Immunoglobulin A (IgA), the intestine's primary antibody which protects against bacteria from penetrating the intestinal lining.*

Visit the Why Florastor page to learn more.

Florastor is the only probiotic with Saccharomyces boulardii CNCM I-745®. This unique probiotic strain works completely different from bacterial probiotics. Instead of introducing other bacteria in your digestive system, Florastor works with your gut to boost your own natural good bacteria and help flush out bad bacteria.* There are many other unique ways Florastor works to support your gut and immune health.* Visit the Why Florastor page to learn more.

Florastor can be taken daily to maintain digestive health.* Florastor can only benefit you during days of use. Florastor does not colonize the gut and is naturally eliminated within five days after last consumption. It is recommended to take Florastor for at least 2 weeks or as advised by your healthcare professional.

How to Take

Take 2 capsules 1-2 times daily. Swallow the capsule with 4 oz. of water or juice. Florastor can be taken with or without food. Beverage should not contain alcohol and should not be carbonated or hot (above 122°F). If you are unable to swallow the capsule, open the capsule and mix contents into soft food (applesauce, yogurt, etc.) or beverage (water, juice, etc.). Do not mix into any carbonated, very hot (above 122°F) or alcohol-containing beverages. Consume within 30 minutes after mixing.

Take 1 stick 1-2 times daily. Mix contents into soft food (applesauce, yogurt, etc.) or beverage (water, juice, etc.). Do not mix into any carbonated, very hot (above 122°F) or alcohol-containing beverages. Consume within 30 minutes after mixing.

Yes! Florastor is proven resistant to most common antibiotics. Florastor has been shown to help maintain digestive balance even during and after antibiotic usage.* Visit the Why Florastor page to learn more.

Diets and Allergies

Yes! Florastor probiotics are vegetarian. However, Florastor probiotics are not vegan because they contain lactose derived from milk.

Yes! Although Florastor probiotics contain lactose, they also stimulate an increase of lactase, a natural enzyme which breaks down lactose for better digestion. Caution remains for individuals genetically incapable of producing lactase.*

Florastor probiotics do not include the risk of exposure to or cross-contamination from any major food allergen or the following ingredients: corn, peanuts, tree nuts, sesame, soy, meat, fish, shellfish, egg protein, or gluten. Please note: FlorastorKids and FlorastorBaby contain corn.


In the absence of data for use of Florastor in pregnant women, we recommend you consult with your healthcare professional prior to taking Florastor supplements.

Very rarely, side effects such as: allergic reaction (skin rash). Fungemia or sepsis in patients with a central venous catheter, and in hospitalized, immunocompromised patients may occur.

Do not use Florastor or other probiotics in any ICU setting and in those individuals with open arterial and venous access required (such as a Vascath, Permcath, or AV fistula).

Do not use for any individual with a central line or port or in the surroundings of any patient with a central line or port. [Central lines include short- and long-term central venous catheters (CVCs) and peripherally inserted central catheters (PICCs)]

Do not use Florastor for pre- or post- organ or bone marrow transplant patients and other patients considered severely immunocompromised or critically ill.

Do not use Florastor probiotics if allergic to any components (especially yeast).


Do not refrigerate Florastor. Keep Florastor probiotics at room temperature and away from direct sunlight.

In general, CFUs are a scientifically accepted unit of measure for bacterial probiotics. Bacteria-based probiotics often claim a specific number of CFUs for comparison between other bacterial probiotics. Unlike the vast majority of bacterial probiotics, Florastor contains a yeast probiotic. The average size of a single probiotic yeast cell is approximately ten times the size of a single probiotic bacterial cell. Because our probiotic yeast cells are very different from probiotic bacteria cells, Florastor probiotics are not measured in the number of colony forming units, we measure Florastor in milligrams instead. Each Florastor capsule or stick contains 250 mg of Saccharomyces boulardii CNCM I-745.

No, Florastor probiotics do not cause or exacerbate a vaginal yeast infection of Candida origin. Taken orally, Florastor transits through the gastrointestinal tract and does not enter the urogenital system.

Florastor probiotics are available for purchase in-store and online at your favorite retailers nationwide. Visit our Where to Buy page to find your preferred retailer. When purchasing on Amazon, please make sure the product is shipped and sold by Amazon or Biocodex USA to guarantee you receive authentic Florastor probiotics.