Limited Human Clinical Trials Large, randomised, placebo-controlled studies remain unavailable
found that peripheral exendin-4 treatment promoted brain cortical autophagy upon type 2 diabetes rats (202)
A meta-analysis of studies using NAC to increase athletic performance found that there were more side effects (none severe) at 20g/day.[ref] High doses of NAC are used in hospitals by IV for reversing acetaminophen toxicity
goat anti-mouse IgG-H+L HRP-conjugated (Bethyl Laboratories, A90-116P, lot 39, WB, 1:10,000, Hu)
doi: 10.1016/j.mehy.2018.07.004 98 WangJ.YanH
meaning that animal studies have shown some adverse effect or there are no well-controlled studies in humans, but potential benefits may warrant use despite potential risks