GABA Quality and Labeling Standard
JHFC-S-004 Enacted: 3 September 2026 / Effective: the same day
Japan Certified Health Food Council (JHFC) — English translation of the standard. In case of discrepancy the Japanese text prevails. Japanese original
Japan Certified Health Food Council (JHFC)
Enacted: 3 September 2026 / Effective: the same day
Preamble (Rationale for Enactment)
GABA is the abbreviation for gamma-aminobutyric acid. In food raw materials, it is obtained through different routes, including fermentation, enzymatic conversion, extraction from plants or other sources, and chemical synthesis; the weight of the raw material itself does not correspond to the amount of GABA. Fermentation products and extracts contain free amino acids, organic acids, sugars and other coexisting constituents, and nonselective measurement may overestimate or underestimate GABA. This Standard is established to link the chemical identity, production origin and selective quantification of GABA to labeling.
Article 1 (Purpose)
The purpose of this Standard is to assess identification of the constituent concerned, production or extraction origin, raw material composition, content units, analytical selectivity, stability, testing and origin-specific cautionary information for health foods containing GABA.
Article 2 (Scope)
This Standard applies to purified raw materials, fermentation products, plant extracts and other raw materials that declare gamma-aminobutyric acid as a constituent, and to oral products incorporating them. The natural presence of trace constituents in ingredients shall not be used to characterize a product as formulated with GABA without a basis for quantification.
Article 3 (Terms and Definitions)
- 1. GABA: A substance chemically identified as gamma-aminobutyric acid.
- 2. Production origin: The route by which GABA is obtained, including microbial fermentation, enzymatic conversion, extraction, chemical synthesis and other routes.
- 3. GABA-containing raw material: A raw material containing fermentation substrates, extract solids or carriers in addition to GABA.
- 4. Free GABA amount: The amount extracted from a product and selectively quantified as gamma-aminobutyric acid.
- 5. Coexisting amino acids: Amino acids present together with GABA in raw materials or products that are relevant to test selectivity or the interpretation of labeling.
Article 4 (Requirements)
- 1. GABA identity shall be determined using an analytical method capable of verifying retention behavior relative to a reference material and separation from other constituents containing amino groups. Values obtained merely by measuring total amino acids, total nitrogen or a nonselective color reaction shall not be treated as the amount of GABA. The assigned value of the reference material, reaction conditions where derivatization is used, and chromatograms shall be retained in test records.
- 2. For raw materials obtained by fermentation or enzymatic conversion, the substrate, information identifying the microorganisms or enzymes used, the GABA production process, and an outline of inactivation, removal and purification shall be recorded. For extraction from plants or other sources, the parts used, country of origin of the raw material, extraction solvent and concentration method shall be distinguished; for chemical synthesis, the principal starting materials and purification processes shall be distinguished. Origin labeling shall be supported by process flow diagrams and supplier documentation for each lot.
- 3. For GABA-containing raw materials, the total raw material amount, GABA amount, carriers, and residual fermentation substrates or extract solids shall be distinguished. The business operator shall establish specifications for purity or content percentage with regard to the manufacturing method and intended use, and shall disclose them and their supporting rationale or make them available upon inquiry. Glutamic acid, other coexisting amino acids and related substances that may arise from the manufacturing route shall be evaluated with respect to both interference with quantification and raw material composition.
- 4. Content shall be labeled in mass units of GABA itself corresponding to the recommended daily intake. The "amount of fermentation product incorporated," "extract amount" or amount of raw material added shall not be presented as the amount of GABA. Values calculated from the GABA content percentage of raw materials shall be distinguished from values measured in the finished product. Where multiple GABA raw materials are incorporated, the materials included in the sum, the calculation formula and each raw material lot shall be recorded.
- 5. For quantification in products, the effects of proteins, sugars, acids, coloring constituents and other amino acids on extraction, derivatization and detection shall be verified for each dosage form. For complex formulations containing fermented food materials or plant extracts, selectivity shall be verified through spike recovery, examination of separation or other methods. Finished product content shall not be determined solely from raw material certificates of analysis.
- 6. Stability evaluation shall take account of temperature, humidity, light, moisture in the product and acid-base conditions, and shall track the measured amount of GABA, appearance and other quality attributes of the dosage form. Where moisture absorption by powders, precipitation in liquid products or reactions with formulation constituents affect measurement, those conditions shall be included in the test plan. The business operator shall establish storage specifications and labeled values on the basis of supporting documentation.
- 7. In addition to GABA identity and quantification, test items shall be selected according to origin from microorganisms, residual solvents, pesticides, heavy metals, and substances associated with fermentation processes or source plants. Where third-party testing is indicated, the method used to measure GABA selectively, whether the sample was a raw material or finished product, and the lot concerned shall be specified. The distinction from total amino acid testing shall be identifiable in the public summary.
- 8. Cautionary labeling shall reflect an evaluation, based on manufacturing documentation, of allergens and other substances subject to declaration that originate from fermentation substrates, source plants, culture media or excipients. Guidance on consultation based on the latest information from public authorities shall be provided for persons who are pregnant or breastfeeding, taking medicinal products or under medical supervision. The recommended daily intake, storage instructions, instructions to discontinue use in the event of abnormalities, and contact details shall correspond to the same product specification as the content labeling.
Article 5 (Assessment Categories)
- Conformity: GABA is distinguished from other amino acids, and production origin, raw material composition, free GABA amount, stability and origin-specific testing are consistent.
- Partial conformity: Selective quantification corresponds to labeling, but parts of the evaluation of coexisting constituents or origin documentation are insufficient, and supplementary measures are recorded.
- Nonconformity: Raw material weight is labeled as the amount of GABA, quantification relies solely on nonselective tests, or process documentation supporting fermentation or extraction origin is absent.
Article 6 (Implementation)
The business operator may make a self-declaration of conformity on the basis of origin-specific raw material specifications, documentation on analytical method selectivity, formulation records, product quantification and storage tests. In response to an application, the Council may verify traceability from the labeled amount of GABA to the production process, reference materials and product chromatograms. Reassessment shall be conducted whenever the substrate, microorganism, source plant, extraction method, dosage form or quantification method is changed.
Supplementary Provisions
This Standard shall take effect on 3 September 2026.
Note: This Standard provides assessment criteria for information disclosure and quality management practices and does not guarantee the effects, efficacy or safety of individual products.