APAP 500 mg / Chlorpheniramine Maleate 2 mg / Diphenhydramine Hydrochloride 25 mg / Pseudoephedrine Hydrochloride 30 mg Oral Tablet
RxNorm 1291957

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 1291957 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: APAP 500 mg / Chlorpheniramine Maleate 2 mg / Diphenhydramine Hydrochloride 25 mg / Pseudoephedrine Hydrochloride 30 mg Oral Tablet.

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

SCD
Acetaminophen 500 mg / chlorpheniramine maleate 2 mg / diphenhydramine hydrochloride 25 mg / pseudoephedrine hydrochloride 30 mg Oral Tablet
Primary clinical definition
AUI:12345776
View
TMSY
Acetaminophen 500 mg / chlorpheniramine maleate 2 mg / diphenhydrAMINE hydrochloride 25 mg / pseudoephedrine hydrochloride 30 mg Oral Tablet
AUI:12379010
View
SY
APAP 500 mg / Chlorpheniramine Maleate 2 mg / Diphenhydramine Hydrochloride 25 mg / Pseudoephedrine Hydrochloride 30 mg Oral Tablet
AUI:4610515
View
TMSY
APAP 500 mg / Chlorpheniramine Maleate 2 mg / diphenhydrAMINE Hydrochloride 25 mg / Pseudoephedrine Hydrochloride 30 mg Oral Tablet
AUI:4610582
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):
Acetaminophen 500 mg / chlorpheniramine maleate 2 mg / diphenhydramine hydrochloride 25 mg / pseudoephedrine hydrochloride 30 mg Oral Tablet
(Atom ID: 12345776)

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
acetaminophen 500 MG / chlorpheniramine maleate 2 MG / diphenhydramine hydrochloride 25 MG / pseudoephedrine hydrochloride 30 MG Oral Tablet
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)
1291957
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12345776
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SCD
Semantic Clinical Drug (Ingredient + Strength + Dose Form)
Source Code
1291957
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
{315266} 161
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{901813} 1362
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{996713} 91168
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{999433} 142429
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AM
{315266} 161
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{901813} 3498
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{996713} 8896
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{999433} 2400
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN BOSS FROM
{315266} 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
{901813} 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
{996713} 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
{999433} 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
04/30/2020
Date the RxNorm atom became obsolete
RXTERM FORM
Tab
The RxTerm dose form name for this drug
TMSY

Tall Man Lettering Synonym (TMSY):
Acetaminophen 500 mg / chlorpheniramine maleate 2 mg / diphenhydrAMINE hydrochloride 25 mg / pseudoephedrine hydrochloride 30 mg Oral Tablet
(Atom ID: 12379010)

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
acetaminophen 500 MG / chlorpheniramine maleate 2 MG / diphenhydrAMINE hydrochloride 25 MG / pseudoephedrine hydrochloride 30 MG Oral Tablet
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)
1291957
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12379010
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
1291957
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):
APAP 500 mg / Chlorpheniramine Maleate 2 mg / Diphenhydramine Hydrochloride 25 mg / Pseudoephedrine Hydrochloride 30 mg Oral Tablet
(Atom ID: 4610515)

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
APAP 500 MG / Chlorpheniramine Maleate 2 MG / Diphenhydramine Hydrochloride 25 MG / Pseudoephedrine Hydrochloride 30 MG Oral Tablet
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)
1291957
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
4610515
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
1291957
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):
APAP 500 mg / Chlorpheniramine Maleate 2 mg / diphenhydrAMINE Hydrochloride 25 mg / Pseudoephedrine Hydrochloride 30 mg Oral Tablet
(Atom ID: 4610582)

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
APAP 500 MG / Chlorpheniramine Maleate 2 MG / diphenhydrAMINE Hydrochloride 25 MG / Pseudoephedrine Hydrochloride 30 MG Oral Tablet
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)
1291957
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
4610582
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
1291957
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.