N-Acetyl Cysteine (NAC) is a powerful antioxidant amino acid and a precursor that allows the body to produce to the critical antioxidant glutathione. Known for its overall support of immune system function and intracellular defense against oxidative stress, NAC is used particularly support the body’s management of the thickness and amount of mucus produced and promote overall lung health.*
The National Institute of Health (NIH) website has additional information about the global regulatory status of NAC, including the following information about NAC use in the US:
Acetylcysteine is used as a mucolytic agent in the adjunctive treatment of patients with abnormal, viscid, or inspissated mucous secretions in such conditions as acute and chronic bronchopulmonary disorders (e.g., pneumonia, bronchitis, emphysema, tracheobronchitis, chronic asthmatic bronchitis, tuberculosis, bronchiectasis, primary amyloidosis of the lung); atelectasis caused by mucus obstruction; pulmonary complications of cystic fibrosis; pulmonary complications of thoracic and cardiovascular surgery; and post-traumatic chest conditions. (McEvoy GK, ed. Drug Information 2012. Bethesda, MD: American Society of Health-System Pharmacists, 2012 p.1747-1784)
NAC has been studied extensively for a variety of uses. For more detailed information, please visit the Memorial Sloan Kettering Cancer Center.