Diphenhydramine hydrochloride 25 mg [Wal-Som]
RxNorm 1437720

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 1437720 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: diphenhydramine hydrochloride 25 mg [Wal-Som].

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

SBDC
Diphenhydramine hydrochloride 25 mg [Wal-Som]
AUI:12303354
View
TMSY
DiphenhydrAMINE hydrochloride 25 mg [Wal-Som]
AUI:12380490
View

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

SBDCPrescribable

Semantic Branded Drug Component (SBDC):
Diphenhydramine hydrochloride 25 mg [Wal-Som]
(Atom ID: 12303354)

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
diphenhydramine hydrochloride 25 MG [Wal-Som]
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)
1437720
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12303354
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SBDC
Semantic Branded Drug Component (Ingredient + Strength + Brand Name)
Source Code
1437720
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
03/26/2024
Date the RxNorm atom was reactivated
RXN OBSOLETED
04/30/2020
Date the RxNorm atom became obsolete
TMSYPrescribable

Tall Man Lettering Synonym (TMSY):
DiphenhydrAMINE hydrochloride 25 mg [Wal-Som]
(Atom ID: 12380490)

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
diphenhydrAMINE hydrochloride 25 MG [Wal-Som]
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)
1437720
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12380490
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
1437720
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.