Willner Chemists Klaire Labs GlutaClear Glutathione Liver Support Metagenics 2 Keto 4 methylthiobutyric Acid in Urine of Rats Fed an Excess Methionine Diet: Agricultural and Biological Chemistry: Vol 55, No 12 The oldest biomarkers in psychiatry were discovered almost a century ago: increased lactate and lowered glutathione, [which] are markers of bioenergetic dysfunction. Now we're exploring how we can address that dysfunction. That's