MG Optima Relax contains evidence based ingredients that may support the natural metabolic pathways for gamma-aminobutyric acid (GABA) production and activity, indicated to promote relaxation during times of stress.  Albion Magnesium bisglycinate is scientifically designed to provide a highly bioavailable form of magnesium.  Magnesium may act as a GABA receptor agonist and also has a binding site on the glutamate receptors helping to regulate the activity of this main excitatory neurotransmitter.  Glycine functions as an inhibitory neurotransmitter in the nervous system while glutamine is a precursor to GABA production.  Theanine is an amino acid from Green Tea that may promote relaxation via binding to glutamine receptors.  Pyridoxal (vitamin B6) is a cofactor for the enzyme Glutamate decarboxylase that synthesises GABA from glutamate.  Zinc also has a binding site on the glutamate receptor and may act as a modulator for both excitatory and inhibitory neurotransmission.If symptoms persist consult your healthcare practitioner. Vitamin supplements should not replace a balanced diet. Contains less than 15mg caffeine per 5 g dose.