N-Acetylcysteine--a safe antidote for cysteine/glutathione deficiency

Curr Opin Pharmacol. 2007 Aug;7(4):355-9. doi: 10.1016/j.coph.2007.04.005. Epub 2007 Jun 29.

Abstract

Glutathione (GSH) deficiency is associated with numerous pathological conditions. Administration of N-acetylcysteine (NAC), a cysteine prodrug, replenishes intracellular GSH levels. NAC, best known for its ability to counter acetaminophen toxicity, is a safe, well-tolerated antidote for cysteine/GSH deficiency. NAC has been used successfully to treat GSH deficiency in a wide range of infections, genetic defects and metabolic disorders, including HIV infection and COPD. Over two-thirds of 46 placebo-controlled clinical trials with orally administered NAC have indicated beneficial effects of NAC measured either as trial endpoints or as general measures of improvement in quality of life and well-being of the patients.

Publication types

  • Research Support, N.I.H., Extramural
  • Review

MeSH terms

  • Acetaminophen / poisoning
  • Acetylcysteine / administration & dosage*
  • Acetylcysteine / adverse effects
  • Acetylcysteine / pharmacokinetics
  • Antidotes / administration & dosage*
  • Antidotes / adverse effects
  • Antidotes / pharmacokinetics
  • Controlled Clinical Trials as Topic
  • Cysteine / deficiency*
  • Cystic Fibrosis / drug therapy
  • Free Radical Scavengers / administration & dosage*
  • Free Radical Scavengers / adverse effects
  • Free Radical Scavengers / pharmacokinetics
  • Glutathione / deficiency*
  • HIV Infections / drug therapy
  • Humans
  • Prodrugs
  • Quality of Life

Substances

  • Antidotes
  • Free Radical Scavengers
  • Prodrugs
  • Acetaminophen
  • Glutathione
  • Cysteine
  • Acetylcysteine