glutathione myelin L-Glutathione reduced (GSH) | Antioxidant Glutathione: Antioxidant Properties Dedicated to

Sixteen weeks of GlyNAC supplementation in older adults significantly restored mitochondrial function, increased gait speed by 19%, improved physical function, and decreased oxidative stress (TBARS) by 80% and inflammation markers

Suehiro, Mariko & Sugimoto, Reiko et al., " gamma -Glutamylcysteine-producing yeast and method of screening the same", published 2004-09-01, issued 2002-11-21, assigned to Ajinomoto KK US 7410790, Suehiro, Mariko

Clinical studies have shown no major side effects, though mild bloating or nausea can occur if taken on a very full stomach

PMID 35846210

It also helps to protect against oxidative stress and supports liver function