Ephedrine sulfate 1.25 mg/ML / hydroxyzine hydrochloride 0.5 mg/ML / theophylline 6.5 mg/ML Oral Solution [Marax]
RxNorm 995570

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 995570 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: ephedrine sulfate 1.25 mg/ML / hydroxyzine hydrochloride 0.5 mg/ML / theophylline 6.5 mg/ML Oral Solution [Marax].

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

SBD
Ephedrine sulfate 1.25 mg/ML / hydroxyzine hydrochloride 0.5 mg/ML / theophylline 6.5 mg/ML Oral Solution [Marax]
AUI:12357173
View
TMSY
EPHEDrine sulfate 1.25 mg/ML / hydrOXYzine hydrochloride 0.5 mg/ML / theophylline 6.5 mg/ML Oral Solution [Marax]
AUI:12377461
View
SY
Marax DF (ephedrine sulfate 6.25 mg / hydroxyzine hydrochloride 2.5 mg / theophylline 32.5 mg) per 5 mL Oral Solution
AUI:3271657
View
TMSY
Marax DF (ePHEDrine sulfate 6.25 mg / hydrOXYzine hydrochloride 2.5 mg / theophylline 32.5 mg) per 5 mL Oral Solution
AUI:3742771
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):
Ephedrine sulfate 1.25 mg/ML / hydroxyzine hydrochloride 0.5 mg/ML / theophylline 6.5 mg/ML Oral Solution [Marax]
(Atom ID: 12357173)

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
ephedrine sulfate 1.25 MG/ML / hydroxyzine hydrochloride 0.5 MG/ML / theophylline 6.5 MG/ML Oral Solution [Marax]
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)
995570
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12357173
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SBD
Semantic Branded Drug (Ingredient + Strength + Dose Form + Brand Name)
Source Code
995570
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
TMSY

Tall Man Lettering Synonym (TMSY):
EPHEDrine sulfate 1.25 mg/ML / hydrOXYzine hydrochloride 0.5 mg/ML / theophylline 6.5 mg/ML Oral Solution [Marax]
(Atom ID: 12377461)

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
ePHEDrine sulfate 1.25 MG/ML / hydrOXYzine hydrochloride 0.5 MG/ML / theophylline 6.5 MG/ML Oral Solution [Marax]
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)
995570
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12377461
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
995570
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):
Marax DF (ephedrine sulfate 6.25 mg / hydroxyzine hydrochloride 2.5 mg / theophylline 32.5 mg) per 5 mL Oral Solution
(Atom ID: 3271657)

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
Marax DF (ephedrine sulfate 6.25 MG / hydroxyzine hydrochloride 2.5 MG / theophylline 32.5 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)
995570
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
3271657
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
995570
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):
Marax DF (ePHEDrine sulfate 6.25 mg / hydrOXYzine hydrochloride 2.5 mg / theophylline 32.5 mg) per 5 mL Oral Solution
(Atom ID: 3742771)

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
Marax DF (ePHEDrine sulfate 6.25 MG / hydrOXYzine hydrochloride 2.5 MG / theophylline 32.5 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)
995570
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
3742771
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
995570
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.