n acetyl l cysteine

N-Acetyl-L-Cysteine (NAC) is a natural sulfur-containing compound produced in living organisms from the amino acid cysteine. It is involved in the intracellular synthesis of glutathione (GSH) 1 , an antioxidant that may play a role in preventing cancer. 2 3 NAC is also used to treat acetaminophen (Tylenol) poisoning 2 4 , as it binds the poisonous forms of acetaminophen that are formed in the liver. NAC has many other health benefits, including replenishing antioxidants and nourishing the brain 2 , helping with detoxification to prevent or diminish kidney and liver damage 2 , improving mental health conditions and substance use disorder 2 , relieving symptoms of respiratory conditions 2 , boosting brain health by regulating glutamate and replenishing glutathione 2 , improving fertility in both men and women 2 , stabilizing blood sugar by decreasing inflammation in fat cells 2 , reducing heart disease risk by preventing oxidative damage 2 , and boosting immune function. 2