Damage to the endothelium is a hallmark of diabetic complications, and reduced glutathione levels correlate with worsening endothelial dysfunction
These contain actual GLP-1 receptor agonists, not the supplement ingredients found in Peaka GLP-1
For the chronic dosing studies, most studies are looking at doses of 4 g/day.[ref] (This used to be the maximum recommended acetaminophen dose per day, but that has now changed to 3g/day.) For reference, a single over-the-counter Extra Strength Tylenol is 500 mg, with the directions saying not to exceed 6 tablets in 24 hours (so 3g/day)
van Bloemendaal, L., Ten Kulve, J
J Clin Endocrinol Metab 103(9):35033506 Mathiesen DS, Bagger JI, Bergmann NC, Lund A, Christensen MB, Vilsbll T et al (2019) The effects of dual GLP-1/GIP receptor agonism on glucagon secretion-a review