Herbs for Liver Health and "Liver Detox": Claims Checked
Claim check on herbs marketed for liver health, detox or cleansing: what milk thistle and artichoke trials found, and which herbs have documented liver injury reports.
Content last updated . This page has not been medically reviewed.
Safety first. Supplements can cause side effects and interact with medicines. Read mushroom safety and interactions before you use any mushroom product.
Stop the product and contact a clinician if you develop dark urine, yellow skin or eyes, unusual tiredness, nausea, poor appetite or abdominal pain while using any herbal product. These are the liver warning signs named by NCCIH and by the US Pharmacopeia (USP) in their guidance on turmeric and green tea extract. [1][2] For more, see liver safety and supplements.
The claim as marketed
"Detox your liver." "Cleanse your liver." "Liver support" or "liver protection" herbs, often sold as blends of milk thistle, dandelion, artichoke, turmeric and others. This page checks what the sources we read actually say. It is information only and does not recommend any herb.What "detox" and "cleanse" programs have been shown to do
NCCIH reviewed detoxes and cleanses. It found only a small number of studies in people, mostly of low quality, and cites a 2015 review that found no compelling research to support "detox" diets for weight management or eliminating toxins from the body. [3] It also warns that some programs can be unsafe and falsely advertised, that the FDA and the Federal Trade Commission have acted against companies selling products with hidden ingredients, that laxatives can cause diarrhea, and that drinking large quantities of water and herbal tea with no food for days could lead to dangerous electrolyte imbalances. [3] Label: marketing claim, with no good evidence of benefit for "detoxing" in the sources we read.The herbs most often sold for the liver
Milk thistle (Silybum marianum; the active extract is silymarin; family Asteraceae). [4]
- Traditional use: NCCIH says milk thistle was historically used for liver disorders. [5]
- Research: NCCIH concludes there is not enough high-quality evidence for definite conclusions. Trials in alcohol-related liver disease, hepatitis B and C, fatty liver disease and other liver problems have been conflicting or too limited, and two NCCIH-funded studies (hepatitis C and a progressive fatty liver disease) did not show benefit from silymarin. [5] A 2024 meta-analysis of 26 trials (2,375 people with non-alcoholic fatty liver disease) reported lower liver enzymes and improved fat in the liver, but said the effects need confirmation. [6] These are mostly lab and imaging markers, not proof of fewer liver complications. Label: promising but limited for fatty liver, mixed for other liver conditions.
- Safety: generally well tolerated, but NCCIH raises quality concerns (silymarin content different from the label, pesticides, mold toxins) and allergy risk for people allergic to ragweed, daisy and related plants. [5] See milk thistle and milk thistle vs NAC.
Artichoke leaf (Cynara cardunculus, leaf; family Asteraceae). [4]
- Official status: The EU herbal committee's 2018 monograph lists artichoke leaf as a traditional product for digestive complaints such as fullness, bloating and gas. It is not listed for liver disease, and the same monograph lists obstruction of the bile duct, cholangitis, liver disease, gallstones and other biliary disorders among its contraindications. [7]
- Research: A 2022 meta-analysis of five randomized trials (333 people with fatty liver disease) reported lower ALT and AST liver enzymes and said that, until recently, no sufficient randomized data existed for the folk-medicine use. [8] Label: promising but limited, using lab markers. See artichoke leaf.
Dandelion (Taraxacum officinale; family Asteraceae). [4]
- Proper evidence not found. A PubMed search for dandelion with liver in clinical trials returned one record, an uncontrolled observational study of a product mixing artichoke, dandelion root, turmeric and rosemary in people with indigestion, which cannot show what dandelion alone does. [9] See dandelion.
Herbs with documented liver injury reports
The same herbs sometimes sold for "liver support" or "detox" blends have liver injury reports. Reports are mostly rare and causation is not always proven.| Herb or product | What the source says | Label |
|---|---|---|
| Turmeric or curcumin (highly absorbable formulations) | Liver damage has been reported in some people using bioavailable formulations [1] | Evidence of harm (reports) |
| Green tea extract (capsules, tablets) | Uncommon liver injury, mainly with extracts; a genetic variant may increase susceptibility [10] | Evidence of harm (reports) |
| Ashwagandha | Rare cases link liver injury to supplements [11] | Evidence of harm (reports) |
| Kava | Rare, sometimes serious or fatal liver injury linked to various products [12] | Evidence of harm (reports) |
| Black cohosh | Rare cases, some very serious; unclear whether black cohosh was responsible; some products contain the wrong herb [13] | Evidence of harm (reports) |
| Cassia cinnamon | Interactions between coumarin and the liver have been reported [14] | Possible harm in sensitive people |
A 2025 review by liver specialists says herbal and dietary supplement liver injury now accounts for 20% of cases in the US Drug-Induced Liver Injury Network. It names green tea extract, ashwagandha and turmeric among major implicated agents, and lists lack of regulatory oversight to confirm ingredients and ensure safety among the challenges. [15] USP reports that green tea extract catechin content varies with manufacturing, and added cautionary label text to its green tea extract monograph telling people with a liver problem not to use it. [2] See herbs and liver injury, chaparral, germander and other liver-toxic herbs, kava and ashwagandha side effects and liver injury reports.
What a reader can safely do
- If you have liver disease, hepatitis or abnormal liver tests, ask a clinician before using any herb. The NHS advises against herbal medicines for people with kidney or liver problems. [16]
- Do not stop prescribed medicines for a "cleanse". [16]
- Check labels and quality. See product quality and contamination and quality testing and certifications.
- Ask a pharmacist about interactions. See how interactions work.
- Tell the surgical team about every herb before an operation.
Frequently asked questions
Can milk thistle detox the liver?
Proper evidence not found for "detoxing". NCCIH says there is not enough high-quality evidence for definite conclusions about milk thistle, and trials in liver diseases were conflicting or too limited. [5]
Do liver cleanses work?
NCCIH cites a 2015 review that found no compelling research that "detox" diets eliminate toxins from the body, and warns some cleansing products have hidden ingredients. [3]
Which herbs have been linked to liver injury?
NCCIH reports liver injury linked to turmeric formulations, green tea extracts, ashwagandha, kava and black cohosh products, mostly rare reports. [1][10][11][12][13]
Is artichoke leaf good for the liver?
The EU monograph covers it for digestive complaints and lists liver disease and bile duct problems as reasons for medical supervision. A small set of trials in fatty liver disease reported lower liver enzymes. [7][8]
What are the signs of liver trouble?
NCCIH lists fatigue, nausea, poor appetite, dark urine and jaundice; USP adds abdominal pain. [1][2] In an emergency in the US, call 911.