I Determine the safety and efficacy of a short course 72 hours of intravenous acetylcysteine in patients with acute liver failure for whom no antidote or specific treatment is available
Detailed Description: PROTOCOL OUTLINE This is a randomized multicenter study Patients are randomized to receive intravenous acetylcysteine or placebo for 72 hours Treatment must begin within 12 hours of hospitalization Patients who advance to grade III or IV encephalopathy are eligible for liver transplantation