Citric Acid Classic Formulas — Natural Herb Library

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Import-variant compound record rather than a classical standalone herb - citric acid is a naturally occurring organic acid widely present in citrus fruits and fermentation systems, not a canonical decoction herb in traditional materia medica.
Contextualizes sour, acidifying, and chelating functions - in practice, citric acid appears more often as a food, pharmaceutical, excipient, or analytical ingredient than as an independently prescribed traditional medicinal.
Bridges citrus-based traditional materials and modern chemistry - its main role in this library is to explain how a recognizable sour organic acid intersects with preservation, formulation, mucosal irritation, and broader biomedical research.
Functions as a modern additive and quality-control compound - the record is retained for catalog completeness and import fidelity rather than to imply a classical single-herb prescribing tradition.

No standalone classical formulas - citric acid is cataloged here as an imported compound-level record rather than as a recognized traditional prescription ingredient.

IMPORT NOTE: The source dataset imported this record as the isolated compound citric acid with the Latin Acidum Citricum and pinyin Ning Meng Suan. This is not a canonical standalone Chinese materia-medica item.
Citric acid is better understood as a widely distributed chemical constituent of foods and medicinal plants, and as a modern acidulant, preservative, chelator, or formulation aid.
This record therefore complements the library's true citrus-herb entries rather than replacing them.