Omega-3s — strongest NAFLD evidence
Multiple meta-analyses confirm omega-3 reduces liver enzymes (ALT, AST) and hepatic fat content in NAFLD/MASLD at 2-4 g/day for 12+ weeks.
Antioxidants — protecting hepatocytes
The liver is the body's primary detoxification site and generates significant oxidative stress. Astaxanthin, vitamin E, and Pycnogenol have evidence for liver enzyme improvement.
Bioavailable Curcumin — anti-inflammatory liver support
Bioavailable curcumin formulations (Curcuwin Ultra, Longvida, Meriva) reduce liver enzymes and hepatic inflammation in NAFLD. Standard curcumin lacks the bioavailability for clinical effect.
Milk Thistle & Traditional Hepatoprotective Botanicals
Silymarin (milk thistle) has decades of use for liver protection. Evidence is mixed but supportive for NAFLD and toxin-induced liver damage.
NAC — glutathione support
N-acetylcysteine is the gold standard for acetaminophen-induced liver injury (medical use). For chronic NAFLD support, evidence is preliminary but mechanistically sound through glutathione precursor activity.
Foundation Nutrients — fix what is missing
Vitamin D deficiency worsens NAFLD. B12 supports liver methylation. Zinc deficiency affects liver function. These are foundational rather than exotic.
Frequently Asked Questions
What is the best supplement for fatty liver?
Omega-3 has the strongest evidence — 2-4 g/day combined EPA+DHA for 12+ weeks reduces liver enzymes (ALT drops ~9 U/L) and hepatic fat content. Bioavailable curcumin (Curcuwin, Longvida, Meriva) at 500-1,000 mg/day adds anti-inflammatory effect. Vitamin E 400-800 IU/day is in clinical NAFLD guidelines for non-diabetic NASH. The honest framing: weight loss (5-10%) reduces liver fat more than any supplement combination.
Does milk thistle actually work?
Mixed evidence. Silymarin has historical use and reasonable mechanistic support. Modern meta-analyses show modest reductions in ALT/AST in NAFLD. Effects are smaller than originally claimed. Reasonable as adjunct, not as standalone treatment. Standardized extracts (Legalon, Siliphos) work better than generic milk thistle. Don't use in place of medical evaluation for liver disease.
What about TUDCA for liver health?
TUDCA (tauroursodeoxycholic acid) is a bile acid with emerging evidence for cholestatic liver conditions and some forms of liver injury. The medical version (UDCA, Actigall) is FDA-approved for primary biliary cholangitis. Supplemental TUDCA is reasonable for general liver support but less studied than its prescription cousin. Quality varies significantly between brands.
Is alcohol the main cause of fatty liver?
Less than people assume. Non-alcoholic fatty liver disease (NAFLD/MASLD) is now far more common than alcoholic liver disease, affecting up to 30% of adults. The drivers are insulin resistance, obesity, and metabolic syndrome — not alcohol. Even modest weight loss (5-10%) significantly reduces liver fat. Supplements help; lifestyle changes help more.
Should I avoid Tylenol if I have liver problems?
Acetaminophen (Tylenol) is actually safer than NSAIDs (Advil, Aleve) for chronic liver disease at standard doses (under 3 g/day with normal liver function, less if liver function is impaired). The myth that Tylenol is "bad for the liver" comes from overdose toxicity, not standard-dose use. NAC is the antidote for acetaminophen overdose. NSAIDs cause GI bleeding and kidney issues that are more problematic in liver disease.
When should I see a hepatologist?
See a hepatologist (or gastroenterologist) for elevated liver enzymes (ALT or AST above 1.5x normal) on more than one test, hepatitis B or C diagnosis, suspected fatty liver disease confirmed by imaging, jaundice, ascites, or any signs of liver decompensation. Modern liver disease treatment includes specific medications for NAFLD/NASH (resmetirom approved 2024), hepatitis C cures, and effective hepatitis B management. Don't self-treat suspected liver disease with supplements.