It fundamentally alters cellular behavior, gene expression, and tissue remodeling processes
Healthy whole foods, preferably organic or farmers market offerings, supply the raw materials your body needs to make and recycle glutathione

Resources: Glutathione: Benefits and Supplements (webmd.com) Glutathione an overview | ScienceDirect Topics Glutathione synthetase deficiency | About the Disease | GARD (nih.gov) The Role of Glutathione Metabolism in Chronic Illness Development and Its Potential Use as a Novel Therapeutic Target PMC (nih.gov) Evidence of oxidative damage and inflammation associated with low glutathione redox status in the autism brain | Translational Psychiatry (nature.com) Glutathione dysregulation and the etiology and progression of human diseases PMC (nih.gov) A Review of Dietary (Phyto)Nutrients for Glutathione Support PMC (nih.gov) Oral supplementation with liposomal glutathione elevates body stores of glutathione and markers of immune function PMC (nih.gov) liposomal-glutathione-techsheet.pdf (itcpharmacy.com) * These statements have not been evaluated by the Food and Drug Administration

During fatigue, the efficiency of ion pumps such as the sodium-potassium ATPase and calcium ATPase can be compromised, leading to disrupted ion gradients across the muscle cell membrane
It may be related to decreased collagen turnover and reduced production of the precursor proteins from which GHK is naturally released
If you want a broader look at related formulas, the Healthy Aging & Recovery collection is a good place to start