Ammonium chloride 135 mg / diphenhydramine hydrochloride 14 mg per 5 mL Oral Solution
RxNorm 1291981

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 1291981 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: ammonium chloride 135 mg / diphenhydramine hydrochloride 14 mg per 5 mL Oral Solution.

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

SCD
Ammonium chloride 27 mg/ML / diphenhydramine hydrochloride 2.8 mg/ML Oral Solution
Primary clinical definition
AUI:12345759
View
SY
Ammonium chloride 135 mg / diphenhydramine hydrochloride 14 mg per 5 mL Oral Solution
AUI:4608337
View
TMSY
Ammonium chloride 135 mg / diphenhydrAMINE hydrochloride 14 mg per 5 mL Oral Solution
AUI:4610713
View
TMSY
Ammonium chloride 27 mg/ML / diphenhydrAMINE hydrochloride 2.8 mg/ML Oral Solution
AUI:12377183
View
SY
NH4Cl 27 mg/ML / Diphenhydramine Hydrochloride 2.8 mg/ML Oral Solution
AUI:4610517
View
TMSY
NH4Cl 27 mg/ML / diphenhydrAMINE Hydrochloride 2.8 mg/ML Oral Solution
AUI:4610628
View

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

SCD

Semantic Clinical Drug (SCD):
Ammonium chloride 27 mg/ML / diphenhydramine hydrochloride 2.8 mg/ML Oral Solution
(Atom ID: 12345759)

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
ammonium chloride 27 MG/ML / diphenhydramine hydrochloride 2.8 MG/ML Oral Solution
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)
1291981
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12345759
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SCD
Semantic Clinical Drug (Ingredient + Strength + Dose Form)
Source Code
1291981
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 OBSOLETED
04/30/2020
Date the RxNorm atom became obsolete
RXTERM FORM
Sol
The RxTerm dose form name for this drug
SY

Synonym (SY):
Ammonium chloride 135 mg / diphenhydramine hydrochloride 14 mg per 5 mL Oral Solution
(Atom ID: 4608337)

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
ammonium chloride 135 MG / diphenhydramine hydrochloride 14 MG per 5 ML Oral Solution
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)
1291981
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
4608337
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
1291981
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):
Ammonium chloride 135 mg / diphenhydrAMINE hydrochloride 14 mg per 5 mL Oral Solution
(Atom ID: 4610713)

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
ammonium chloride 135 MG / diphenhydrAMINE hydrochloride 14 MG per 5 ML Oral Solution
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)
1291981
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
4610713
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
1291981
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):
Ammonium chloride 27 mg/ML / diphenhydrAMINE hydrochloride 2.8 mg/ML Oral Solution
(Atom ID: 12377183)

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
ammonium chloride 27 MG/ML / diphenhydrAMINE hydrochloride 2.8 MG/ML Oral Solution
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)
1291981
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12377183
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
1291981
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):
NH4Cl 27 mg/ML / Diphenhydramine Hydrochloride 2.8 mg/ML Oral Solution
(Atom ID: 4610517)

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
NH4Cl 27 MG/ML / Diphenhydramine Hydrochloride 2.8 MG/ML Oral Solution
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)
1291981
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
4610517
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
1291981
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):
NH4Cl 27 mg/ML / diphenhydrAMINE Hydrochloride 2.8 mg/ML Oral Solution
(Atom ID: 4610628)

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
NH4Cl 27 MG/ML / diphenhydrAMINE Hydrochloride 2.8 MG/ML Oral Solution
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)
1291981
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
4610628
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
1291981
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.