Dextromethorphan / guaifenesin Powder for Oral Solution
RxNorm 2176266

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 2176266 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: dextromethorphan / guaifenesin Powder for Oral Solution.

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

SCDF
Dextromethorphan / guaifenesin Powder for Oral Solution
AUI:12263389
View
TMSY
Dextromethorphan / guaiFENesin Powder for Oral Solution
AUI:12385760
View

This clinical crossover tool is designed for healthcare professionals, pharmacists, and data analysts to safely compare substitute products and manage medication interoperability.

SCDF

Semantic Clinical Drug Form (SCDF):
Dextromethorphan / guaifenesin Powder for Oral Solution
(Atom ID: 12263389)

Clinical Status & Identity

Prescribable Status
NO (Reference)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
dextromethorphan / guaifenesin Powder for Oral Solution
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
O
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
2176266
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12263389
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SCDF
Semantic Clinical Drug Form (Ingredient + Dose Form)
Source Code
2176266
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.

Technical Attributes & Logic

RXN OBSOLETED
11/28/2023
Date the RxNorm atom became obsolete
TMSY

Tall Man Lettering Synonym (TMSY):
Dextromethorphan / guaiFENesin Powder for Oral Solution
(Atom ID: 12385760)

Clinical Status & Identity

Prescribable Status
NO (Reference)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
dextromethorphan / guaiFENesin Powder for Oral Solution
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
O
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
2176266
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12385760
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
TMSY
Tall Man Lettering Synonym (Tall Man Lettering synonym of another TTY, given to distinguish between commonly confused drugs.)
Source Code
2176266
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

Dextromethorphan


Dextromethorphan is used to temporarily relieve cough caused by the common cold, the flu, or other conditions. Dextromethorphan will relieve a cough but will not treat the cause of the cough or speed recovery. Dextromethorphan is in a class of medications called antitussives. It works by decreasing activity in the part of the brain that causes coughing.
[Learn More]


Guaifenesin


Guaifenesin is used to relieve chest congestion. Guaifenesin may help control symptoms but does not treat the cause of symptoms or speed recovery. Guaifenesin is in a class of medications called expectorants. It works by thinning the mucus in the air passages to make it easier to cough up the mucus and clear the airways.
[Learn More]


* Please review the disclaimer below.