functional groups for glutathione Food and Health Applications with Emphasis on Extraction, Identification, and Quantification Methods: A Review Structure of reduced glutathione (GSH)
Description
doi: 10.1111/j.1474-9726.2012.00827.x

Matter 1 (2), 345368

This is best documented for the growth-hormone-axis peptides

It's best known to improve muscle, tendon, and ligament repairs, especially those injured from trauma, overuse, or surgery
