Best Supplements for Liver Health: Fatty Liver Evidence and Risks
Vitamin E improved fatty liver inflammation in a major trial; milk thistle is mixed. Some supplements harm the liver. See what helps and what to avoid.
By the editorial team · Updated Oct 14, 2026 · 3 sources cited
The best supplements for liver health have narrow uses. Vitamin E improved liver inflammation in non-diabetic adults with fatty liver disease (NASH) in a major NIH trial, but it should only be used under medical supervision. Milk thistle has mixed results. Weight loss is the most effective treatment for fatty liver, and several supplements, including green tea extract and some herbs, can injure the liver.
Evidence-ranked options
| Supplement | Evidence | Typical dose | Notes |
|---|---|---|---|
| Vitamin E (NASH, supervised) | B | 800 IU a day in the PIVENS trial, only with a doctor | Improved NASH in non-diabetic adults; long-term risks debated. |
| Milk thistle | C | As studied | Mixed results in liver disease; generally well tolerated. |
| Coffee (food, not supplement) | C | 2–3 cups a day | Linked to lower liver disease risk in observational studies. |
| Liver 'detox' products | D | Avoid | No evidence; some contain hepatotoxic herbs. |
A: strong · B: moderate · C: limited or mixed · D: good evidence of no benefit. See the evidence database.
Warning signs
Stop any supplement and see a doctor if you develop yellow skin or eyes, dark urine, pale stools or unusual fatigue. Many supplement-related liver injuries are documented in NIH's LiverTox database; our safety database lists key warnings.
Ingredient guides
Frequently asked questions
Which supplements can damage the liver?
Concentrated green tea extract, high-dose vitamin A, some bodybuilding products, kava and several other herbs have been linked to liver injury. Ashwagandha and turmeric have rare reports.
Can supplements reverse fatty liver?
Losing 7–10% of body weight is the most effective way to reduce liver fat and inflammation.
Sources
Educational content, not medical advice. Read our medical disclaimer.