N-acetylcysteine, also known as NAC, is the supplement form of the non-essential amino acid L-cysteine. In its natural form, cysteine is found in foods including meat (pork, beef), poultry (chicken, eggs), fish (tuna), dairy (yogurt, swiss cheese) and seeds (sunflower). Cysteine is a component of the powerful antioxidant, glutathione, and is used for its liver-protective properties and immune function support, as well as, in the treatment of an acetaminophen overdose.
© 2021 figure3, inc. All rights reserved.
If you think you have a medical emergency, call 911 immediately.
If you are in crisis, reach out for help to a crisis help line.