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Supports Glutathione ProductionHealthy Respiratory FunctionNon-GMOA Dietary SupplementVegetarian / VeganKosher HalalHow it works: N-acetyl-cysteine (NAC) is a stable and bioactive form of cysteine an amino acid that plays a key role in phase Il detoxification and homocysteine metabolism. NAC is efficiently transported into the cell where it is readily converted to cysteine for glutathione synthesis and regeneration. Because NAC can penetrate the blood-brain-barrier it is especially important for maintaining healthy brain and nervous system tissues. NAC also helps to support respiratory health by promoting normal mucus viscosity.