Frequently Asked Questions


What is a probiotic?

The World Health Organization defines probiotics as "live microorganisms which, when administered in adequate amounts, confer a health benefit to the host."†9 These microorganisms include both bacteria and yeast-based cells, which interact with the body differently.

Why is Florastor® a unique probiotic?

Florastor is unique because it contains the active probiotic ingredient Saccharomyces boulardii lyo, a friendly yeast found naturally on the skin of lychees and mangosteens (tropical fruits). Most of the other probiotics you'll find on the market are bacterial probiotics that are either in pill form or in foods such as yogurt. When compared to bacterial probiotics, Florastor is safe to take with antibiotics†3 and is especially beneficial during times you need it most. Visit the Florastor Versus Bacterial Probiotics comparison chart to find out why Florastor is superior.

What is Florastor suggested for?

Florastor is a daily probiotic supplement intended to help promote the body's own natural intestinal flora.†4 Anyone's intestinal flora can become upset and vulnerable—whether from the daily flow of life (travel, stress, diet), or the effects of antibiotics or nonspecific digestive issues. Florastor helps maintain peace in your intestinal tract to promote intestinal health†4 and harmony, which results in better absorption of essential nutrients.

What is the Florastor dosage for treating diarrhea?

Antibiotic-Associated Diarrhea10,11
Adults: 2 capsules twice a day to help prevent antibiotic-associated diarrhea
Children: 1 sachet twice a day to help reduce the risk of antibiotic-associated diarrhea

Acute Infectious Diarrhea12
Adults: 2 capsules twice a day to help reduce symptoms related to acute infectious diarrhea
Children: 2 capsules twice a day to help treat acute infectious diarrhea

How should I take Florastor?

There are several ways to take Florastor.

  • Swallow the capsule whole.
  • Open the capsule or packet and empty the contents onto your tongue. Follow with a 4 oz. drink of water or juice.
  • Open the capsule or packet and sprinkle over semisolid food (applesauce, yogurt, etc.).
  • Open the capsule or packet and dissolve the contents in liquid (water, juice, milk, formula, etc.).
Is Florastor appropriate for kids?

Yes. FlorastorKids is appropriate for children two months and older†8 and is available as a tutti-frutti-flavored powder that can be mixed with a liquid or semisolid food.

What is the difference between Florastor and FlorastorKids®?

The only difference is the kid-friendly, tutti-frutti flavor in FlorastorKids. Otherwise they are interchangeable. One Florastor capsule and one FlorastorKids powder packet contain the same amount of active ingredient, 250 mg of Saccharomyces boulardii lyo.

How is Florastor supplied?

Florastor is supplied as vegetarian, gluten-free capsules and packets. Florastor and FlorastorKids can be found on the shelf near other digestive health products or behind the pharmacy counter in capsules or packets of 10, 20, and 50.

Do I need to refrigerate Florastor?

No. The lyophilization of Saccharomyces boulardii lyo allows storage at room temperature (25°C or 77°F) to guarantee an optimal level of living cells for a three-year shelf life. Florastor is produced via a top-quality manufacturing method, lyophilization, that is similar to freeze-drying. Do not refrigerate as this could expose Florastor to excess moisture.

How long does it take for Florastor to work?

Within approximately 30 minutes of ingestion, each Florastor capsule dissolves in the stomach, allowing the yeast cells to help keep your intestinal tract on track. Florastor can only benefit your intestinal health during days of administration. Florastor is naturally eliminated through the digestive tract and is undetectable within five days after cessation.10

If I am taking an antibiotic, can I take Florastor too?

Yes, because Florastor is a yeast. Florastor is not destroyed by antibiotics†3 that can kill bacteria, including bacterial probiotics such as those in probiotic yogurt.

What side effects can I expect while taking Florastor?

Instances of side effects are exceedingly rare, with less than 1% of individuals reporting mild constipation or thirst. In most cases, symptoms go away within a few days.

Can Florastor cause a vaginal yeast infection?

No. Florastor does not cause or exacerbate a vaginal yeast infection. Taken by mouth, Florastor transits through the gastrointestinal tract and does not pass through the urinary or genital system.

What if I am nursing or pregnant?

In the absence of reliable animal teratogenesis data, Biocodex advises women who are pregnant or nursing to check with their healthcare practitioner before using Florastor.

How long can I use Florastor?

Long-term use of Florastor is not associated with complications. After repeated oral doses, Florastor transits through the digestive tract attaining steady-state levels that are maintained throughout the administration period.†5 Florastor is no longer present in stools two to five days after discontinuation of treatment.†3