Glycine + NAC (GlyNAC) supplementation shows promise in being great for longevity and increased healthspan: increased antioxidant defense via glutathione reduced inflammation reduced hallmarks of aging better immune Effects of oral N acetylcysteine on walking capacity, leg reactive hyperemia, and inflammatory and angiogenic mediators in patients with intermittent claudication American Journal of Physiology Heart and Circulatory Physiology American The mechanism of action of N acetylcysteine (NAC): The emerging role of H2S and sulfane sulfur species ScienceDirect The Use and Potential Benefits of N Acetylcysteine in Non Acetaminophen Acute Liver Failure: An Etiology Based Review Differential effects of N acetylcysteine on retinal degeneration in two mouse models of normal tension glaucoma Cell Death & Disease Long term N acetylcysteine administration rescues liver steatosis via endoplasmic reticulum stress with unfolded protein response in mice Lipids in Health and Disease Springer Nature Link