Theoretically, these changes in lipid metabolism, including reductions in free fatty acid concentrations, could reduce intramyocellular lipid deposition, leading to improvements in mitochondrial function and insulin sensitivity [53, 54] that could be beneficial to skeletal muscle function
However, both can cause water retention, carpal tunnel symptoms, and effects on glucose metabolism at higher doses
Cho SK, Pedram A, Levin ER, Kwon YJ
Approximately one in six patients (up to ~16 %) experience localized reactions at the injection site
The problem with inexpensive glutathione supplements is that GSH is inherently unstable: the thiol group of the molecule oxidises relatively quickly to the inactive GSSG form upon exposure to heat, light or oxygen