Diltiazem hydrochloride 420 mg Extended Release Oral Capsule [Tiadylt]
RxNorm 1988331

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 1988331 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: diltiazem hydrochloride 420 mg Extended Release Oral Capsule [Tiadylt].

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

SBD
Diltiazem hydrochloride 420 mg Extended Release Oral Capsule [Tiadylt]
AUI:12371988
View
TMSY
DilTIAZem hydrochloride 420 mg Extended Release Oral Capsule [Tiadylt]
AUI:12429192
View
SY
Tiadylt 420 mg Extended Release Oral Capsule
AUI:9701266
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):
Diltiazem hydrochloride 420 mg Extended Release Oral Capsule [Tiadylt]
(Atom ID: 12371988)

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
diltiazem hydrochloride 420 MG Extended Release Oral Capsule [Tiadylt]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
E
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
1988331
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12371988
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SBD
Semantic Branded Drug (Ingredient + Strength + Dose Form + Brand Name)
Source Code
1988331
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):
DilTIAZem hydrochloride 420 mg Extended Release Oral Capsule [Tiadylt]
(Atom ID: 12429192)

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
dilTIAZem hydrochloride 420 MG Extended Release Oral Capsule [Tiadylt]
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
E
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
1988331
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12429192
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
1988331
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):
Tiadylt 420 mg Extended Release Oral Capsule
(Atom ID: 9701266)

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
Tiadylt 420 MG Extended Release Oral Capsule
Official description of the drug concept as defined in the source vocabulary.
Suppress Flag
E
N: Not suppressible | O: Obsolete | Y: Suppressed by editor | E: Unquantified non-prescribable drug.

Interoperability & Coding

Concept ID (RxCUI)
1988331
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
9701266
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SY
Synonym (Synonym of another TTY, given for clarity.)
Source Code
1988331
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.