GABA

Grades and forms of GABA powder

GABA (gamma-aminobutyric acid, 4-aminobutanoic acid) is a non-proteinogenic amino acid. Supplement manufacturers buy it as a white microcrystalline powder. No EU-wide list of permitted forms covers GABA. Its use in food supplements therefore depends on national rules and on its novel-food status, which you must confirm for each target market.

GABA has no stereocentre. Unlike L-theanine or L-glutamine, there is no L- or D-form to specify. The material is the same molecule whatever its source.

Two production routes reach the market: fermentation and chemical synthesis. The route matters for three reasons:

• Regulatory assessment. Novel-food and national assessments can depend on how a substance is produced.
• Label and marketing positioning. Some brands specify fermentation-derived material for their own sourcing policies.
• Impurity profile. Each route leaves different residues, which the specification addresses.

The physical form decides how the powder runs on your line. Standard powder suits blending and drink mixes. Flow and particle-size behaviour matter more for encapsulation and direct compression. Assay, loss on drying, particle size, heavy metals and microbiology appear on the specification sheet and certificate of analysis. SoleChem sends both with its quote. For bulk and wholesale volumes, SoleChem holds stock in its warehouses in Italy and Spain. Ask for the grade and production route you need in the quote form.

EU regulatory status

Directive 2002/46/EC defines food supplements broadly. The definition includes substances with a nutritional or physiological effect, not only vitamins and minerals. Its Annexes I and II list only vitamins and minerals, so they do not cover GABA. The permitted forms guide explains what those annexes contain.

No harmonised EU rules set conditions for amino acids such as GABA in food supplements. Member states apply their own rules on these “other substances”. Some notify or list permitted substances and amounts. Others assess products case by case, including the borderline between food supplements and medicinal products. Requirements for the same product can therefore differ between countries. Check each target market with its competent authority.

Novel-food status must be confirmed before launch. Under Regulation (EU) 2015/2283, a food not consumed to a significant degree in the EU before 15 May 1997 that falls within one of the categories listed in Article 3 needs authorisation. Check whether GABA, from your chosen production route, appears in the Union list of novel foods, and check its consultation history. The novel food guide explains how to do this.

Any claim made for GABA must comply with Regulation (EC) No 1924/2006. Check the EU Register of nutrition and health claims before drafting any wording. Our health claims guide covers how the Register works.

Formulation notes

GABA is freely soluble in water. That suits drink powders, effervescent tablets and liquid formats, where it dissolves without suspending agents. In powders and sports nutrition blends, check uniformity of distribution when GABA is a minor component.

In capsules, microcrystalline powders may need a glidant such as silicon dioxide to fill evenly. HPMC shells suit products positioned as plant-based. Confirm the fill weight per capsule against your label claim at pilot scale.

In tablets, test compressibility early. Amino acid powders often need fillers and binders for direct compression, or a granulation step. Tablet hardness and friability should be checked on the final blend.

GABA carries a primary amine group. Like other amino acids, it can react with reducing sugars under heat and during storage, causing browning. This matters in gummies built on glucose syrup and in heat-processed bars. Run stability trials on the finished product.

Keep containers closed to limit moisture uptake; the specification sheet states storage conditions. Assess taste at the target concentration in liquid and chewable formats. Blends often combine GABA with other amino acids such as glycine or taurine. Check compatibility of the full blend rather than each ingredient alone.

GABA is declared as the substance itself, so no elemental conversion applies. The mass to dose is the label claim divided by the assay on the certificate of analysis, plus any overage. The overage calculator handles that step. Other amino acids for supplement manufacturing are listed under Amino Acids.