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Erceflora (Bacillus Clausii)

Written by Stephanie Nera, RPh, PharmD · Pharmacology

Updated Jan 29

Know the basics

What is Erceflora (Bacillus clausii)?

Erceflora is a product that contains the spores of Bacillus clausii, a type of bacteria that is resistant to antibiotics. It helps replenish and support the normal flora of the gut. Additionally, it is considered a probiotic. Indications for probiotics include post-antibiotic use, chronic diarrhea or constipation, and certain vitamin malabsorption disorders.

How should I take Erceflora?

Oral suspension

  • Some aggregates or particles may be seen, however, this is normal. Shake well before use.
  • To open the bottle, twist and pull off the top.
  • Dilute the contents of the ampule into a glass of water or other beverage (e.g. juice, milk, formula).
  • Lastly, consume the entire content of the bottle immediately to prevent contamination.

How do I store Erceflora?

This product is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store it in the bathroom or the freezer.

There may be different brands of Bacillus clausii that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush this product down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed.

Consult your pharmacist for more details about how to safely discard your product.

Know the precautions & warnings

What should I know before using Erceflora?

You should not use it if you are hypersensitive to the active ingredient or any of the other formulated substances.

During treatment with antibiotics, Erceflora can be administered during the interval between antibiotic administrations.

Is it safe during pregnancy or breastfeeding?

Erceflora is pregnancy risk category A, according to the US Food and Drug Administration (FDA). Therefore, it is considered safe to use during pregnancy and lactation.

However, still consult your doctor before taking this medication.

FDA pregnancy risk category reference below:

  • A=No risk;
  • B=No risk in some studies;
  • C=There may be some risk;
  • D=Positive evidence of risk;
  • X=Contraindicated;
  • N=Unknown

Know the side effects

What side effects can occur from Erceflora?

No adverse effects have been reported when taken as directed. However, if you experience any side effects or worsening of your condition, inform your doctor or pharmacist.

Know the interactions

What drugs may interact with Erceflora?

No drugs or food are known to modify the effect of this medication. However, if you are taking other medications, consult your doctor or pharmacist.

Does food or alcohol interact with this medication?

No drugs or food are known to modify the effect of this medication. If you are taking other medicines, inform your doctor or pharmacist.

What health conditions may interact with Erceflora?

Erceflora may interact with your health condition. This interaction may worsen your condition or alter the way the drug works. Therefore, it is important to always let your doctor or pharmacist know your medical history before taking this drug.

Understand the dosage

The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using this medication.

What is the dose of Erceflora for an adult?

Take 2 to 3 bottles per day at regular intervals, or as directed by a doctor.

What is the dose of Erceflora for a child?

Administer 1 to 2 bottles per day at regular intervals, or as directed by a doctor.

How is Erceflora available?

Erceflora is available in the following dosage forms and strengths:

  • Oral suspension, each 5 mL bottle contains 2 billion Bacillus clausii spores

What should I do in case of an emergency or overdose?

Fortunately, there are no reports of overdose or toxicity with Erceflora. However, if you feel ill or experience serious side effects contact your doctor or emergency medical services.

What should I do if I miss a dose?

If you miss a dose, take it as soon as you remember. However, if it is almost time for the next dose, just take one. Do not take a double dose.

To learn more about this drug, consult your doctor.


Hello Health Group does not provide medical advice, diagnosis or treatment.

Written by

Stephanie Nera, RPh, PharmD


Updated Jan 29

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