Acute Liver Failure Supportive Care Protocol
Primary Stack
Core supplements with strongest evidenceStandard treatment for acetaminophen overdose; may have benefit in non-acetaminophen ALF via antioxidant effects
Supporting Stack
Additional supplements for enhanced resultsMay help with hepatic encephalopathy and muscle wasting in liver disease; hospital use
Supporting Studies (1)
Supports clotting factor synthesis; given to address coagulopathy in liver failure
Supporting Studies (1)
Often deficient in liver disease; supplementation may help with encephalopathy
Supporting Studies (1)
Hypophosphatemia common during liver regeneration; repletion essential
Supporting Studies (1)
Essential to prevent Wernicke encephalopathy, especially with glucose administration
Supporting Studies (1)
How This Protocol Works
Simple Explanation
Acute liver failure (ALF) is a medical emergency where the liver rapidly loses function in someone without prior liver disease. It can cause confusion (hepatic encephalopathy), bleeding problems, and multi-organ failure. Causes include acetaminophen (Tylenol) overdose (most common in the US/UK), viral hepatitis, drug reactions, toxins, and other conditions. ALF requires immediate hospitalization and often liver transplant.
CRITICAL: ACUTE LIVER FAILURE IS A MEDICAL EMERGENCY. If you or someone has signs of ALF (confusion, jaundice, bleeding, severe fatigue after taking potentially toxic substances), call emergency services immediately. This condition requires ICU care and potentially liver transplant. The supplements listed here are used in hospital settings under medical supervision - this is NOT a home treatment guide.
* N-Acetylcysteine (NAC) is the standard treatment for acetaminophen overdose and is given in hospitals. It works by replenishing glutathione, the liver's main antioxidant. Even in non-acetaminophen ALF, NAC has shown benefit in studies and is often used. This is administered IV in emergency settings.
* Branched-Chain Amino Acids (BCAAs) may help with hepatic encephalopathy (brain fog/confusion from liver failure) and are used in hospital nutrition protocols.
* Vitamin K is given because the failing liver cannot make clotting factors, leading to dangerous bleeding risk. IV or oral vitamin K supports whatever liver function remains.
* Zinc deficiency is common in liver disease and may contribute to encephalopathy. Supplementation may provide some benefit.
* Phosphorus becomes depleted during liver regeneration. Hospitals monitor and replete phosphorus levels as the liver heals.
* Thiamine is given to prevent Wernicke encephalopathy, especially before glucose administration. This is standard ICU practice.
Expected timeline: ALF treatment is measured in hours to days. NAC must be started as early as possible for acetaminophen overdose. Recovery depends on cause, severity, and whether transplant is needed. This is intensive hospital care, not outpatient supplement use.
Clinical Perspective
Acute liver failure (ALF): rapid hepatic dysfunction (INR >1.5, encephalopathy) in patient without preexisting liver disease, occurring <26 weeks from first symptoms. Classification: hyperacute (<7 days), acute (7-21 days), subacute (21 days-26 weeks). Etiology varies by region: acetaminophen overdose (46% US), viral hepatitis (common worldwide), drug-induced (idiosyncratic), autoimmune, Wilson disease, Budd-Chiari, pregnancy-related (AFLP, HELLP), ischemic, indeterminate. Mortality without transplant: 40-80% depending on etiology.
CRITICAL: ALF IS A MEDICAL EMERGENCY requiring ICU admission, transfer to liver transplant center. Key management: identify/treat cause, NAC for all (not just acetaminophen), ICP monitoring if grade 3-4 encephalopathy, avoid sedation, correct coagulopathy only if bleeding/procedure, treat infections aggressively, renal replacement therapy for AKI, avoid nephrotoxins, glucose monitoring, early transplant evaluation (King's College Criteria, MELD-Na). Supplements here are HOSPITAL INTERVENTIONS - not home treatment.
* NAC (A-grade): Restores hepatic glutathione, reduces oxidative stress. Standard for acetaminophen overdose - IV protocol (150mg/kg over 1h, then 50mg/kg over 4h, then 100mg/kg over 16h). Randomized trial: NAC improves transplant-free survival in non-acetaminophen ALF with grade 1-2 encephalopathy (PMID: 19524577). Systematic review supports use (PMID: 21518946). Continue until INR <1.5 or transplant.
* BCAAs (B-grade): Correct amino acid imbalance (low BCAA:AAA ratio), may reduce HE. Cochrane review: may improve hepatic encephalopathy (PMID: 29771439). Hospital nutritional support.
* Vitamin K (B-grade): Support clotting factor synthesis (II, VII, IX, X). Review: indicated for coagulopathy with bleeding or pre-procedure (PMID: 26919445). 5-10mg IV/PO. Don't correct INR prophylactically - INR is prognostic marker.
* Zinc (C-grade): Deficiency common; zinc-dependent urea cycle enzymes. Review: may improve HE (PMID: 22999907). 50mg daily if deficient.
* Phosphorus (B-grade): Hypophosphatemia during regeneration indicates good prognosis but requires repletion. Clinical study: common finding in surviving ALF patients (PMID: 15915461). IV repletion per levels.
* Thiamine (B-grade): Prevents Wernicke; always give before glucose. Review: essential supplementation in liver failure (PMID: 24095622). 100-200mg IV.
Biomarker targets: INR (prognosis), bilirubin, ammonia, lactate, arterial pH, creatinine, phosphorus, glucose, West Haven grade for HE, ICP if monitored, King's College Criteria for transplant listing.
Protocol notes: Transfer to liver transplant center immediately. Poison control for toxin ingestion. NAC for all ALF regardless of etiology. Head of bed 30 degrees. Avoid sedation (interferes with neuro monitoring). Intubate for grade 3-4 HE. Propofol if sedation needed (shorter acting). Mannitol or hypertonic saline for ICP management. Hypothermia may help with ICP. Avoid nephrotoxins (NSAIDs, aminoglycosides, contrast). Stress ulcer prophylaxis (PPI). Antibiotic prophylaxis controversial but often used. Fungal surveillance. Blood glucose management. Enteral nutrition when possible. CRRT for renal failure. Coagulopathy: FFP only if bleeding/procedure - don't correct prophylactically (INR is prognostic). Platelet transfusion if <10K or bleeding. Transplant evaluation: King's College Criteria, MELD-Na. Contraindications to transplant: active substance abuse, severe cardiopulmonary disease, extrahepatic malignancy, brain death. Living donor transplant option. Auxiliary transplant allows native liver regeneration. Post-transplant immunosuppression. Spontaneous recovery possible depending on etiology.