Hydralazine hydrochloride 37.5 mg
RxNorm 905376

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 905376 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: hydralazine hydrochloride 37.5 mg.

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

SCDC
Hydralazine hydrochloride 37.5 mg
AUI:12275728
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TMSY
HydrALAZINE hydrochloride 37.5 mg
AUI:12376810
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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.

SCDCPrescribable

Semantic Clinical Drug Component (SCDC):
Hydralazine hydrochloride 37.5 mg
(Atom ID: 12275728)

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
hydralazine hydrochloride 37.5 MG
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)
905376
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12275728
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SCDC
Semantic Clinical Drug Component (Ingredient + Strength)
Source Code
905376
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 BOSS STRENGTH DENOM UNIT
1
RXN Boss Strength Denom Unit
RXN BOSS STRENGTH DENOM VALUE
1
RXN Boss Strength Denom Value
RXN BOSS STRENGTH NUM UNIT
MG
RXN Boss Strength Num Unit
RXN BOSS STRENGTH NUM VALUE
37.5
RXN Boss Strength Num Value
RXN IN EXPRESSED FLAG
P
Strength Expressed As Precise Flag
RXN STRENGTH
37.5 MG
Strength plus unit of SCDC
TMSYPrescribable

Tall Man Lettering Synonym (TMSY):
HydrALAZINE hydrochloride 37.5 mg
(Atom ID: 12376810)

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
hydrALAZINE hydrochloride 37.5 MG
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)
905376
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12376810
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
905376
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.