Phentermine 3.75 mg / topiramate 23 mg 24HR Extended Release Oral Capsule
RxNorm 1302839

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 1302839 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: phentermine 3.75 mg / topiramate 23 mg 24HR Extended Release Oral Capsule.

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

SCD
24 HR phentermine 3.75 mg / topiramate 23 mg Extended Release Oral Capsule
Primary clinical definition
AUI:12347890
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SY
Phentermine 3.75 mg / topiramate 23 mg 24 HR Extended Release Oral Capsule
AUI:6354432
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PSN
Phentermine 3.75 mg / topiramate 23 mg 24HR Extended Release Oral Capsule
AUI:6365546
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This clinical crossover tool is designed for healthcare professionals, pharmacists, and data analysts to safely compare substitute products and manage medication interoperability.

SCDPrescribable

Semantic Clinical Drug (SCD):
24 HR phentermine 3.75 mg / topiramate 23 mg Extended Release Oral Capsule
(Atom ID: 12347890)

Clinical Status & Identity

Prescribable Status
YES (Active)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
24 HR phentermine 3.75 MG / topiramate 23 MG Extended Release Oral Capsule
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)
1302839
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12347890
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SCD
Semantic Clinical Drug (Ingredient + Strength + Dose Form)
Source Code
1302839
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
{1302837} 82078
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AI
{1302838} 38404
RXCUI of BOSS Active Ingredient preceded by RXCUI of SCDC responsible for value
RXN AM
{1302837} 8152
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AM
{1302838} 38404
RXCUI of BOSS Active Moiety preceded by RXCUI of SCDC responsible for value
RXN AVAILABLE STRENGTH
3.75 MG / 23 MG
Available drug strengths listed in the order of ingredients from the drug
RXN BOSS FROM
{1302837} AM
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
{1302838} 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 HUMAN DRUG
US
Drug available for use in Humans
RXN QUANTITY
24 HR
Normal Form quantity factor
SYPrescribable

Synonym (SY):
Phentermine 3.75 mg / topiramate 23 mg 24 HR Extended Release Oral Capsule
(Atom ID: 6354432)

Clinical Status & Identity

Prescribable Status
YES (Active)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
phentermine 3.75 MG / topiramate 23 MG 24 HR Extended Release Oral Capsule
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)
1302839
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
6354432
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
1302839
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.
PSNPrescribable

Prescribable Name (PSN):
Phentermine 3.75 mg / topiramate 23 mg 24HR Extended Release Oral Capsule
(Atom ID: 6365546)

Clinical Status & Identity

Prescribable Status
YES (Active)
Part of the RxNorm Current Prescribable Content subset including all drugs available for prescription in the USA.
Concept Description
phentermine 3.75 MG / topiramate 23 MG 24HR Extended Release Oral Capsule
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)
1302839
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
6365546
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
1302839
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.

Patient Education

Phentermine and Topiramate


Phentermine and topiramate extended-release (long-acting) capsules are used to help adults who are obese or who are overweight and have weight-related medical problems to lose weight and to keep from gaining back that weight. Phentermine and topiramate extended-release capsules must be used along with a reduced calorie diet and exercise plan. Phentermine is in a class of medications called anorectics. It works by decreasing appetite. Topiramate is in a class of medications called anticonvulsants. It works by decreasing appetite and by causing feelings of fullness to last longer after eating.
[Learn More]


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