Hydroxy Compound - Ephedrine, Hydroxyzine & Theophylline
RxNorm 154500

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 154500 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: Hydroxy Compound - Ephedrine, Hydroxyzine & Theophylline.

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

BN
Hydroxy Compound - Ephedrine, Hydroxyzine & Theophylline
AUI:2535580
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TMSY
Hydroxy Compound - ePHEDrine, hydrOXYzine & Theophylline
AUI:3742741
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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.

BN

Brand Name (BN):
Hydroxy Compound - Ephedrine, Hydroxyzine & Theophylline
(Atom ID: 2535580)

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
Hydroxy Compound - Ephedrine, Hydroxyzine & Theophylline
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)
154500
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
2535580
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
BN
Brand Name (A proprietary name for a family of products containing a specific active ingredient.)
Source Code
154500
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 ACTIVATED
01/28/2010
Date the RxNorm atom was reactivated
RXN BN CARDINALITY
multi
Cardinality of RxNorm Brand Name Atom
RXN OBSOLETED
03/27/2013
Date the RxNorm atom became obsolete
RXN OBSOLETED
08/30/2007
Date the RxNorm atom became obsolete
TMSY

Tall Man Lettering Synonym (TMSY):
Hydroxy Compound - ePHEDrine, hydrOXYzine & Theophylline
(Atom ID: 3742741)

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
Hydroxy Compound - ePHEDrine, hydrOXYzine & Theophylline
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)
154500
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
3742741
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
154500
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.