The first is that it was an experimental animal study with a relatively small sample size, but this is a general limitation common in animal studies
Are glutathione tablets effective and safe to use on a daily basis
The typical recommended dosage for glutathione supplements ranges from 250 mg to 500 mg daily, depending on the intended use
Research suggests it may help restore glutathione levels, reduce oxidative stress, support mitochondrial energy production, and improve both physical and cognitive performance in older adults
Wang B, Wu Z, Ji Y, Sun K, Dai Z, Wu G (2016) L-glutamine enhances tight junction integrity by activating CaMK kinase 2AMP-activated protein kinase signaling in intestinal porcine epithelial cells