Decreased insulin-mediated suppression of adipocyte lipolysis has been reported in obese rats (118) as well as in women with visceral obesity (3, 54), although several other studies in humans report that the antilipolytic effects of insulin are well conserved, even in subjects with highly impaired insulin-mediated glucose regulation (7, 8, 11, 52)
If any, it should be minimal
If a supplement company claims their glutathione product amplifies GLP-1 medication results, they're either misrepresenting the mechanism or selling a product with undisclosed additives that do something glutathione itself cannot
It is not a drug, dietary supplement, food, cosmetic, or medical device, and it is not approved by the FDA, EMA, or any other regulatory authority for human or veterinary use
Mol Metab (2016) 5:44958
19, e1011833