Allegra Relief Anti-Itch (allantoin 0.5 % / diphenhydrAMINE HCl 2 % ) Topical Cream
RxNorm 1420997

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 1420997 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: Allegra Relief Anti-Itch (allantoin 0.5 % / diphenhydrAMINE HCl 2 % ) Topical Cream.

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

SBD
Allantoin 5 mg/ML / diphenhydramine hydrochloride 20 mg/ML Topical Cream [Allegra Cooling Relief Anti-Itch]
AUI:12368700
View
TMSY
Allantoin 5 mg/ML / diphenhydrAMINE hydrochloride 20 mg/ML Topical Cream [Allegra Cooling Relief Anti-Itch]
AUI:12380354
View
SY
Allegra Cooling Relief Anti-Itch (allantoin 0.5 % / diphenhydramine hydrochloride 2 % ) Topical Cream
AUI:8696695
View
TMSY
Allegra Cooling Relief Anti-Itch (allantoin 0.5 % / diphenhydrAMINE hydrochloride 2 % ) Topical Cream
AUI:8698333
View
PSN
Allegra Relief Anti-Itch (allantoin 0.5 % / diphenhydrAMINE HCl 2 % ) Topical Cream
AUI:8696694
View

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

SBD

Semantic Branded Drug (SBD):
Allantoin 5 mg/ML / diphenhydramine hydrochloride 20 mg/ML Topical Cream [Allegra Cooling Relief Anti-Itch]
(Atom ID: 12368700)

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
allantoin 5 MG/ML / diphenhydramine hydrochloride 20 MG/ML Topical Cream [Allegra Cooling Relief Anti-Itch]
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)
1420997
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12368700
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SBD
Semantic Branded Drug (Ingredient + Strength + Dose Form + Brand Name)
Source Code
1420997
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 AI
{1049097} 1362
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{358582} 508
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AM
{1049097} 3498
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{358582} 508
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{1049097} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{358582} AI
Source of BOSS as either from the active ingredient (AI) or the active moiety (AM) preceded by RXCUI of SCDC responsible for value
RXN OBSOLETED
02/02/2022
Date the RxNorm atom became obsolete
RXTERM FORM
Cream
The RxTerm dose form name for this drug
TMSY

Tall Man Lettering Synonym (TMSY):
Allantoin 5 mg/ML / diphenhydrAMINE hydrochloride 20 mg/ML Topical Cream [Allegra Cooling Relief Anti-Itch]
(Atom ID: 12380354)

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
allantoin 5 MG/ML / diphenhydrAMINE hydrochloride 20 MG/ML Topical Cream [Allegra Cooling Relief Anti-Itch]
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)
1420997
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12380354
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
1420997
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.
SY

Synonym (SY):
Allegra Cooling Relief Anti-Itch (allantoin 0.5 % / diphenhydramine hydrochloride 2 % ) Topical Cream
(Atom ID: 8696695)

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
Allegra Cooling Relief Anti-Itch (allantoin 0.5 % / diphenhydramine hydrochloride 2 % ) Topical Cream
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)
1420997
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
8696695
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
1420997
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.
TMSY

Tall Man Lettering Synonym (TMSY):
Allegra Cooling Relief Anti-Itch (allantoin 0.5 % / diphenhydrAMINE hydrochloride 2 % ) Topical Cream
(Atom ID: 8698333)

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
Allegra Cooling Relief Anti-Itch (allantoin 0.5 % / diphenhydrAMINE hydrochloride 2 % ) Topical Cream
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)
1420997
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
8698333
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
1420997
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.
PSN

Prescribable Name (PSN):
Allegra Relief Anti-Itch (allantoin 0.5 % / diphenhydrAMINE HCl 2 % ) Topical Cream
(Atom ID: 8696694)

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
Allegra Relief Anti-Itch (allantoin 0.5 % / diphenhydrAMINE HCl 2 % ) Topical Cream
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)
1420997
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
8696694
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
PSN
Prescribable Name (Synonym of another TTY, given for clarity and for display purposes in electronic prescribing applications. Only one PSN per concept.)
Source Code
1420997
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.