GABA + Magnesium Capsules

Gamma-aminobutyric acid (CAS 56-12-2, EINECS 200-258-6, C4H9NO2, molecular weight 103.12, IUPAC 4-aminobutanoic acid, PubChem CID 119) is a non-protein amino acid - four carbons with the amine at the far end from the carboxyl, which is precisely why it never appears in a protein chain. It is a solid melting at 203 C, very freely water-soluble at roughly 1,300 mg/mL, with a basic pKa of 10.6, and that solubility is the whole reason a GABA capsule picks up moisture if the pack is careless. It is also the chief inhibitory neurotransmitter of the mammalian central nervous system, which is where the molecule gets its reputation; that is biochemistry, and this page makes no claim about what an orally taken capsule does. Two industrial routes reach the material. The fermentation route runs glutamate decarboxylase (EC 4.1.1.15, systematic name L-glutamate 1-carboxy-lyase (4-aminobutanoate-forming), a pyridoxal-phosphate enzyme) on L-glutamate, decarboxylating it to 4-aminobutanoate and carbon dioxide - the same chemistry that puts GABA into fermented foods. The synthetic route builds the molecule chemically. The two articles are not labelled identically in most markets, so Thovek states the route on the certificate of analysis rather than leaving a brand to assume it. Magnesium is the second component, and it is specified as a salt rather than as a word. The default is magnesium bisglycinate - magnesium diglycinate, CAS 14783-68-7, C4H8MgN2O4, molecular weight 172.42, the magnesium salt of two glycine units, glycine itself CAS 56-40-6 - which on formula weight carries 14.1% elemental magnesium, 24.305 divided by 172.42. Buyers should know that buffered bisglycinate grades blend in magnesium oxide and therefore declare a higher elemental figure with proportionally less of the material actually present as the chelate; whether the article is fully reacted or buffered is written into the specification, never inferred. Magnesium is an essential dietary mineral with an EU nutrient reference value of 375 mg under Regulation (EU) No 1169/2011, Annex XIII. Its established biochemical role is as a cofactor: ATP is biologically active only when bound to a magnesium ion, and over 300 enzymes - every enzyme that uses or synthesises ATP, and those that build DNA and RNA from nucleotides - require it. In the finished capsule the two are declared separately, milligrams of GABA and milligrams of elemental magnesium with the salt named, because a label reading "magnesium 200 mg" without the salt tells a formulator nothing about fill weight and nothing about whether the capsule will physically close. Both components are hygroscopic to different degrees, so blending and encapsulation run under controlled low humidity and alu-alu blister or a desiccated bottle is the preferred pack. On origin, both actives are non-animal. Fermentation-route GABA is grown on a defined medium whose carbon and nitrogen sources - cane or tapioca molasses, or soy-derived nitrogen - are stated on the certificate, because a soy-derived medium is the one thing in this product capable of raising an allergen question; declared soy-free grades are available. There is no milk, egg, fish, crustacean, gluten or nut input. With the HPMC shell the finished capsule is vegan and vegetarian; the gelatin shell option is bovine, and then it is neither.