If you are looking for a supplement to support metabolic health alongside a solid nutrition and exercise foundation, berberine is one of the few with meaningful evidence behind it
GHK-Cu is easier to evaluate scientifically: you can match the label to one compound, one molecular identity, and a cleaner COA expectation
However, limited evidence exists on the advantages of these therapies for individual patients, and data on their efficacy in broader populations are limited
In fact, it had been documented more than ten years earlier that when ascorbic acid and glutathione are together in the presence of the hexoxidase [ascorbate oxidase] described by Szent-Gyorgyi the glutathione wholly protects the vitamin from oxidation, whilst it is itself oxidized at a rate which, with the same concentration of enzyme, is exactly the same as the rate with which ascorbic acid is oxidized when alone. (Hopkins and Morgan 1938)
In klinischen Studien wurden zudem eine Verbesserung der glykmischen Parameter, darunter HbA1c, sowie positive Vernderungen bei ausgewhlten Stoffwechselindikatoren festgestellt