Alanine 4 mg/ML / arginine 5.8 mg/ML / cysteine 0.2 mg/ML / glycine 3.3 mg/ML / histidine 1.6 mg/ML / isoleucine 7.6 mg/ML / leucine 13.7 mg/ML / lysine 5.8 mg/ML / methionine 2.5 mg/ML / phenylalanine 3.2 mg/ML / proline 6.3 mg/ML / serine 3.3 mg/ML / threonine 2 mg/ML / tryptophan 0.9 mg/ML / valine 8.8 mg/ML [FreAmine 6.9]
RxNorm 800860

Concept Hierarchy & Relationship Mapping

RxNorm Concept Unique Identifier (RxCUI) 800860 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: alanine 4 mg/ML / arginine 5.8 mg/ML / cysteine 0.2 mg/ML / glycine 3.3 mg/ML / histidine 1.6 mg/ML / isoleucine 7.6 mg/ML / leucine 13.7 mg/ML / lysine 5.8 mg/ML / methionine 2.5 mg/ML / phenylalanine 3.2 mg/ML / proline 6.3 mg/ML / serine 3.3 mg/ML / threonine 2 mg/ML / tryptophan 0.9 mg/ML / valine 8.8 mg/ML [FreAmine 6.9].

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

SBDC
Alanine 4 mg/ML / arginine 5.8 mg/ML / cysteine 0.2 mg/ML / glycine 3.3 mg/ML / histidine 1.6 mg/ML / isoleucine 7.6 mg/ML / leucine 13.7 mg/ML / lysine 5.8 mg/ML / methionine 2.5 mg/ML / phenylalanine 3.2 mg/ML / proline 6.3 mg/ML / serine 3.3 mg/ML / threonine 2 mg/ML / tryptophan 0.9 mg/ML / valine 8.8 mg/ML [FreAmine 6.9]
AUI:12307252
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SBDC

Semantic Branded Drug Component (SBDC):
Alanine 4 mg/ML / arginine 5.8 mg/ML / cysteine 0.2 mg/ML / glycine 3.3 mg/ML / histidine 1.6 mg/ML / isoleucine 7.6 mg/ML / leucine 13.7 mg/ML / lysine 5.8 mg/ML / methionine 2.5 mg/ML / phenylalanine 3.2 mg/ML / proline 6.3 mg/ML / serine 3.3 mg/ML / threonine 2 mg/ML / tryptophan 0.9 mg/ML / valine 8.8 mg/ML [FreAmine 6.9]
(Atom ID: 12307252)

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
alanine 4 MG/ML / arginine 5.8 MG/ML / cysteine 0.2 MG/ML / glycine 3.3 MG/ML / histidine 1.6 MG/ML / isoleucine 7.6 MG/ML / leucine 13.7 MG/ML / lysine 5.8 MG/ML / methionine 2.5 MG/ML / phenylalanine 3.2 MG/ML / proline 6.3 MG/ML / serine 3.3 MG/ML / threonine 2 MG/ML / tryptophan 0.9 MG/ML / valine 8.8 MG/ML [FreAmine 6.9]
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)
800860
RxNorm Unique Identifier for the standardized concept.
Atom ID (RXAUI)
12307252
Unique identifier for this specific name variation (Atom).
Term Type (TTY)
SBDC
Semantic Branded Drug Component (Ingredient + Strength + Brand Name)
Source Code
800860
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
05/31/2023
Date the RxNorm atom became obsolete

Patient Education

L-Tryptophan


What is it? L-Tryptophan is an essential amino acid that is necessary for making proteins. It is naturally found in red meat, poultry, eggs, and dairy.

L-tryptophan is important for many organs in the body. L-tryptophan is not made by the body and must be consumed from the diet. After absorbing L-tryptophan from food, the body converts some of it to 5-HTP and then to serotonin. Serotonin is a hormone that transmits signals between nerve cells. Changes in serotonin levels in the brain can affect mood.

People use L-tryptophan for severe PMS symptoms, depression, insomnia, and many other conditions, but there is no good scientific evidence to support any of these uses.


[Learn More]


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