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.