Valacyclovir 500 mg
RxNorm 330526

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 330526 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: valacyclovir 500 mg.

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

SCDC
Valacyclovir 500 mg
AUI:1507299
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TMSY
ValACYclovir 500 mg
AUI:3726485
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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):
Valacyclovir 500 mg
(Atom ID: 1507299)

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
valacyclovir 500 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)
330526
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
1507299
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SCDC
Semantic Clinical Drug Component (Ingredient + Strength)
Source Code
330526
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
500
RXN Boss Strength Num Value
RXN STRENGTH
500 MG
Strength plus unit of SCDC
TMSYPrescribable

Tall Man Lettering Synonym (TMSY):
ValACYclovir 500 mg
(Atom ID: 3726485)

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
valACYclovir 500 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)
330526
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
3726485
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
330526
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

Valacyclovir


Valacyclovir is used to treat herpes zoster (shingles) and genital herpes. It does not cure herpes infections but decreases pain and itching, helps sores to heal, and prevents new ones from forming. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
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