Saccharomyces boulardii Chewable Tablet [Rezyst Probiotic]
RxNorm 1301666

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 1301666 represents a standardized clinical drug concept used for cross-system interoperability. This concept aggregates multiple Atom IDs (AUIs), which are specific naming variations and synonyms used across pharmaceutical databases to ensure accurate medication mapping for: Saccharomyces boulardii Chewable Tablet [Rezyst Probiotic].

The following semantic concepts and normalized strings are associated with this clinical entity:

SBDF
Saccharomyces boulardii Chewable Tablet [Rezyst Probiotic]
AUI:4627523
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This clinical crossover tool is designed for healthcare professionals, pharmacists, and data analysts to safely compare substitute products and manage medication interoperability.

SBDFPrescribable

Semantic Branded Drug Form (SBDF):
Saccharomyces boulardii Chewable Tablet [Rezyst Probiotic]
(Atom ID: 4627523)

Clinical Status & Identity

Prescribable Status
YES (Active)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
Saccharomyces boulardii Chewable Tablet [Rezyst Probiotic]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
N
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
1301666
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
4627523
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SBDF
Semantic Branded Drug Form (Ingredient + Dose Form + Brand Name)
Source Code
1301666
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
RxNorm Vocabulary (RXNORM)
The official name and abbreviation for the vocabulary source.
Source Version
20AA_260601F
The specific version of the vocabulary provided by the source.
Update Date
June 01, 2026
The date when this RxNorm data was last updated by the NLM.
License Contact
RxNorm Customer Service, , U.S. National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, (888) FIND-NLM, , https://support.nlm.nih.gov/support/create-case/, https://www.nlm.nih.gov/research/umls/rxnorm/
Source licensing contact information.

Patient Education

Saccharomyces Boulardii


What is it? Saccharomyces boulardii is a yeast believed to be a strain of Saccharomyces cerevisiae. It is likely effective for treating certain types of diarrhea.

Saccharomyces boulardii is called a "probiotic," a friendly organism that helps to fight off "bad" organisms that might cause diseases. Saccharomyces boulardii is different from other strains of Saccharomyces cerevisiae, commonly known as brewer's yeast and baker's yeast.

Saccharomyces boulardii is most commonly used for treating and preventing diarrhea, including rotaviral diarrhea in children. It has some evidence of use for other types of diarrhea, acne, and a digestive tract infection that can lead to ulcers. There is no good evidence to support using Saccharomyces boulardii for COVID-19.


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