Ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampicin 150 mg oral tablet
RxNorm 2477663

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 2477663 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: Ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampicin 150 mg oral tablet.

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

SY
Ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampicin 150 mg oral tablet
AUI:12536776
View
PT
Ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampin 150 mg oral tablet
AUI:12536777
View
FN
Product containing precisely ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampicin 150 mg/1 each conventional release oral tablet (clinical drug)
AUI:12537625
View

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

SY

Synonym (SY):
Ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampicin 150 mg oral tablet
(Atom ID: 12536776)

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
Ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampicin 150 mg oral tablet
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)
2477663
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12536776
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
879829009
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
US Edition of SNOMED CT (SNOMEDCT_US)
The official name and abbreviation for the vocabulary source.
Source Version
2026_01_31
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
National Library Of Medicine, NLM is a Charter Member of SNOMED International on behalf of the U.S., National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, 1-888-FIND-NLM (1-888-346-3656), , https://support.nlm.nih.gov/support/create-case/,
Source licensing contact information.
PT

Designated preferred name (PT):
Ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampin 150 mg oral tablet
(Atom ID: 12536777)

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
Ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampin 150 mg oral tablet
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)
2477663
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12536777
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
PT
Designated preferred name ()
Source Code
879829009
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
US Edition of SNOMED CT (SNOMEDCT_US)
The official name and abbreviation for the vocabulary source.
Source Version
2026_01_31
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
National Library Of Medicine, NLM is a Charter Member of SNOMED International on behalf of the U.S., National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, 1-888-FIND-NLM (1-888-346-3656), , https://support.nlm.nih.gov/support/create-case/,
Source licensing contact information.
FN

Full form of descriptor (FN):
Product containing precisely ethambutol hydrochloride 275 mg and isoniazid 75 mg and rifampicin 150 mg/1 each conventional release oral tablet (clinical drug)
(Atom ID: 12537625)

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
Product containing precisely ethambutol hydrochloride 275 milligram and isoniazid 75 milligram and rifampicin 150 milligram/1 each conventional release oral tablet (clinical drug)
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)
2477663
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12537625
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
FN
Full form of descriptor ()
Source Code
879829009
The "Most useful" identifier asserted by the original source vocabulary.

Source & Registry Data

Source Name
US Edition of SNOMED CT (SNOMEDCT_US)
The official name and abbreviation for the vocabulary source.
Source Version
2026_01_31
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
National Library Of Medicine, NLM is a Charter Member of SNOMED International on behalf of the U.S., National Library of Medicine, 8600 Rockville Pike, , Bethesda, MD, United States, 20894, 1-888-FIND-NLM (1-888-346-3656), , https://support.nlm.nih.gov/support/create-case/,
Source licensing contact information.