N-acetylcysteine (NAC) is an
amino acid derivative found in nature. It
forms cysteine that is required in
glutathione synthesis. Glutathione is an
important antioxidant in the body. NAC
supplement can support adequate
cysteine supply in the synthesis. NAC acts
also directly as an antioxidant: it bonds
with reactive oxygen radicals, thus
reducing oxidative stress.
Use of NAC is justified in cases where
oxidative stress is involved, such as acute
liver dysfunctions, acute pancreatitis,
sepsis, or in critically ill dogs.