Glutathione (GSH) is a tripeptide composed of glutamate, cysteine, and glycine. As the body's most critical endogenous antioxidant, GSH plays an irreplaceable role in detoxification (as a substrate for phase II conjugation reactions), antioxidant defense (by scavenging ROS/RNS), immune regulation (supporting T cell function), and protein thiol protection.
The rate-limiting step in GSH synthesis is cysteine availability—cysteine being the least stable and most easily oxidized of the three amino acids. With aging, chronic stress, toxin exposure, and malnutrition, intracellular GSH levels drop significantly, leading to increased oxidative stress and declining immune function.
Optimizing GSH synthesis requires support from three amino acids: NAC (N-acetylcysteine), which provides a stable cysteine precursor with high oral bioavailability that converts to cysteine inside cells; glycine, the second amino acid needed for GSH synthesis and conditionally essential during stress; and glutamine, which converts to glutamate, the third amino acid required for GSH production.
Clinical studies show that combining NAC and glycine (GlyNAC) significantly boosts red blood cell GSH levels in older adults, improves mitochondrial function, reduces oxidative stress markers, and enhances cognitive function and muscle strength. This "GlyNAC protocol" has become a core strategy in functional medicine for anti-aging and detoxification support.
Hong Kong Dynas Group Co., Ltd. offers GSH synthesis support formulas (NAC + Glycine + Glutamine + Selenium + Vitamin B6) in the Detox & Biotransformation Series, available in both capsule and powder forms with custom formulation options. The formula design follows a full-pathway optimization logic for GSH synthesis based on "precursor supply + cofactor support."
