NuMedica N-Acetyl L-Cysteine is a supplement form of cysteine designed to support tissue levels of glutathione (GSH). Commonly used for antioxidant protection, cysteine helps improve brain health by regulating critical neurotransmitters like GSH and glutamate. GHS is an amino acid produced in the liver and used as a natural defense against reactive oxygen species (ROS), as well as the detoxification of drugs, metabolites and other compounds. N-acetyl l- cysteine has also been shown to have additional benefits for healthy lung function by loosening mucus and reducing inflammation in the respiratory system. Recommended Use: Take one capsule twice per day between meals or as directed by your healthcare practitioner.