DHM vs. Milk Thistle: Which Has Better Evidence for Drinkers?

DHM vs milk thistle is really a contrast in evidence: milk thistle's silymarin has decades of liver research in people with mixed results, while DHM has newer, mostly animal research tied to alcohol. Neither has good evidence for preventing hangovers, and neither protects your liver from heavy drinking.1, 2 The most reliable thing for a liver under strain from alcohol is less alcohol.3

Key takeaways

  • A Cochrane review of 18 randomized trials in 1,088 people with alcohol-related or viral liver disease found milk thistle had no significant effect on death, complications or liver tissue.1
  • A 2025 meta-analysis of 55 randomized trials found silymarin lowered the liver enzymes AST and ALT overall, but not in alcohol-related liver disease.4
  • As of October 2026, no randomized trial has tested DHM alone for hangover; human DHM trials used 300 to 970 mg a day in people with fatty liver or diabetes, without alcohol.2, 5, 6
  • In a November 2024 check of 46 hangover products on Amazon's US site, DHM and milk thistle were each in 47.8%, and none had demonstrated efficacy.7

What are milk thistle and DHM?

Both are plant compounds sold as supplements, but they come from different plants and have very different research histories.

Milk thistle (Silybum marianum) is a Mediterranean herb used for centuries as a food and a traditional liver remedy.8, 9 The main constituent of its extract is silymarin, a mixture of compounds.9

Dihydromyricetin (DHM) is a plant flavonoid whose richest source is vine tea (Ampelopsis grossedentata).2 Our guide to what DHM is covers it in depth.

Liver research: silymarin vs. DHM

Milk thistle has far more human liver research than DHM, but more research hasn't produced clearer answers, and neither has been shown to protect the liver from drinking.

Milk thistle. NIH's complementary-health center says trials in liver diseases, including alcohol-related liver disease, "have been conflicting or too limited to allow conclusions."9 The Cochrane review found no effect on overall death, complications or liver tissue; a drop in liver-related deaths across all trials disappeared in the high-quality ones.1 The 2025 meta-analysis saw lower liver enzymes in fatty liver and viral hepatitis, but no significant effect in alcohol-related liver disease.4

DHM. In mice given alcohol, injected DHM reduced liver fat and liver enzymes, and DHM by mouth did something similar in another mouse study.10, 11 In people, three small randomized trials in fatty liver disease or type 2 diabetes (one using a multi-ingredient supplement), at 300 to 970 mg a day, reported better lab markers. None involved alcohol.5, 6, 12

For alcohol-related liver disease, stopping drinking is the core of treatment.3 See liver support after drinking and whether liver cleanses work.

DHM vs milk thistle at a glance

DHM vs. milk thistle: research and label facts (as of October 2026)
  Milk thistle (silymarin) DHM
Main source Silybum marianum seed Vine tea stems and leaves
Human liver trials Dozens (55 in one 2025 meta-analysis) Three small trials, none with alcohol
Alcohol-related liver disease No significant benefit in reviews Animal studies only
Hangover trials None found None of DHM alone
Typical amounts 250 to 750 mg silymarin, 2 to 3 times a day 300 to 1,000 mg a day
LiverTox liver-injury score E (unlikely cause) E (unlikely cause)

Table sources: milk thistle8, 4, 1; DHM13, 2.

Does either help with hangovers?

Neither has good hangover evidence, and milk thistle has essentially none.

We found no randomized trial of milk thistle alone for hangover in PubMed (searched October 9, 2026), and it isn't among the remedies with positive results in a 2022 review of 21 placebo-controlled hangover trials.14 DHM hasn't been tested alone either. The human hangover trials tested Hovenia extracts, measured at less than 1% DHM, with mixed results.2

Regulators have noticed the liver angle. In July 2020, FDA warning letters to hangover-product sellers cited claims like "Protect your liver with milk thistle," treating them as drug claims.15, 16

Typical doses on labels

Milk thistle in hangover blends is usually a small fraction of the amount in standalone milk thistle products, while DHM amounts vary roughly tenfold.

  • Milk thistle. Standalone products contain 250 to 750 mg of silymarin, usually taken two to three times a day.8 On the multi-ingredient hangover labels we checked on October 9, 2026, milk thistle ranged from 50 mg of extract (standardized to 80% silymarin, so about 40 mg of silymarin) to 200 mg of seed; one product listed it inside a blend with no amount. Seed powder isn't an extract, and those labels don't state its silymarin content.
  • DHM. The same labels listed 300 mg to 1,000 mg of DHM per serving, or a vine tea extract weight. LiverTox lists typical DHM doses of 300 to 1,000 mg a day.13 After Party by Fuller Health contains 3,250 mg per 5-capsule serving, which is higher than the doses in published human studies (up to about 970 mg a day); safety at that dose hasn't been studied.6

A bigger number isn't evidence of a bigger effect for either ingredient. No human study has compared doses for any drinking-related outcome.

Safety and interactions

Both look low-risk for the liver itself, but each has its own cautions.

Milk thistle most often causes bloating, nausea or gas, and it can trigger allergic reactions in people allergic to related plants such as ragweed, chrysanthemum, marigold or daisy. It may affect blood sugar in type 2 diabetes, and some products have contained more or less silymarin than labeled, or been contaminated.9 LiverTox finds little evidence of clinically significant drug interactions.8

DHM has few safety trials. In lab tests it inhibited three drug-processing enzymes (CYP3A4, CYP2D6 and CYP2E1); that hasn't been tested in people.13, 17 There are no data in pregnancy. Ask a pharmacist before taking either with prescription medicines, and a doctor if you have liver disease or diabetes.

Why do so many blends include both?

They're familiar names: milk thistle as a traditional liver herb and DHM from years of hangover marketing. Popularity, not trial evidence, explains the pairing.

No study has tested DHM and milk thistle together for any drinking-related outcome, and no US hangover product had demonstrated efficacy in the 2025 market study.7 If you're comparing blends, pure DHM vs. hangover blends explains how to read the amounts.

Choosing between them

For a better morning after drinking, there's no evidence to choose on. For your liver, the evidence points to drinking less, not to either herb.

If you still want to try one, judge it on things you can check: whether the label states the amount of silymarin or DHM, how that compares with studied doses, your medicines and allergies, and price. The DHM research tracker keeps the studies in one place.

What we don't know yet

  • Whether either ingredient changes hangover symptoms in a well-designed trial.
  • Whether silymarin helps alcohol-related liver disease in high-quality trials.1
  • How much swallowed DHM reaches the blood in people.18
  • Whether the two interact, and how safe DHM is at 3,250 mg or with repeated use.

Frequently asked questions

Does milk thistle help hangovers?

There's no trial evidence that it does. We found no randomized trial of milk thistle alone for hangover, and hangover blends usually contain far less than standalone milk thistle products.14, 8 Drinking less is the only approach with evidence.

Can I take milk thistle and DHM together?

No study has tested the combination. Milk thistle can cause digestive upset and allergic reactions, and DHM inhibited some drug-processing enzymes in lab tests, so check with a pharmacist if you take medicines or have diabetes.9, 17

Is milk thistle good for your liver if you drink?

There's no good evidence that it protects the liver from alcohol. A Cochrane review found no significant effect on death, complications or liver tissue in alcohol-related or viral liver disease.1 If you're worried about your liver, see a doctor; cutting back on alcohol is the step with proof behind it.3

When should I take milk thistle for drinking?

There's no evidence-based timing, because no trial shows milk thistle before or after drinking changes how you feel or protects your liver. If you take it for another reason, follow the label and tell your doctor or pharmacist.

Sources

  1. Rambaldi A, et al. Milk thistle for alcoholic and/or hepatitis B or C virus liver diseases. Cochrane Database Syst Rev. 2007;(4):CD003620. PubMed
  2. Skinner SG, et al. Therapeutic Effects of Dihydromyricetin on Wholly Alcohol-Attributed Conditions: A Systematic Review. Nutrients 18(14). 2026. PubMed
  3. Osna NA, et al. Alcoholic Liver Disease: Pathogenesis and Current Management. Alcohol Res 38(2):147-161. 2017. PubMed
  4. Shahsavari K, et al. Are alterations needed in Silybum marianum (Silymarin) administration practices? A novel outlook and meta-analysis on randomized trials targeting liver injury. BMC Complement Med Ther. 2025;25(1):134. PubMed
  5. Chen S, et al. Dihydromyricetin improves glucose and lipid metabolism and exerts anti-inflammatory effects in nonalcoholic fatty liver disease: A randomized controlled trial. Pharmacol Res 99:74-81. 2015. PubMed
  6. Ran L, et al. Ampelopsis grossedentata supplementation effectively ameliorates the glycemic control in patients with type 2 diabetes mellitus. Eur J Clin Nutr 73(5):776-782. 2019. PubMed
  7. Verster JC, et al. The alcohol hangover product market of the United States of America. Drug Science, Policy and Law. 2025. journals.sagepub.com
  8. LiverTox: Milk Thistle (last updated January 21, 2020). NIDDK / NCBI Bookshelf, 2020. ncbi.nlm.nih.gov
  9. Milk Thistle (last updated February 2025). NCCIH / NIH, 2025. nccih.nih.gov
  10. Silva J, et al. Dihydromyricetin Protects the Liver via Changes in Lipid Metabolism and Enhanced Ethanol Metabolism. Alcohol Clin Exp Res 44(5):1046-1060. 2020. PubMed
  11. Qiu P, et al. Dihydromyricetin modulates p62 and autophagy crosstalk with the Keap-1/Nrf2 pathway to alleviate ethanol-induced hepatic injury. Toxicol Lett 274:31-41. 2017. PubMed
  12. Michailidou E, et al. Dietary supplement based on dihydromyricetin in metabolic dysfunction-associated steatotic liver disease: a double-blind, placebo-controlled, randomized clinical trial. Ann Gastroenterol 39(1):54-62, 2026. PubMed
  13. LiverTox: Dihydromyricetin (updated Aug 16, 2023). NIDDK / NCBI Bookshelf (LiverTox), 2023. ncbi.nlm.nih.gov
  14. Roberts E, et al. The efficacy and tolerability of pharmacologically active interventions for alcohol-induced hangover symptomatology: a systematic review of the evidence from randomised placebo-controlled trials. Addiction 117(8):2157-2167. 2022. PubMed
  15. FDA warning letter MARCS-CMS 593770, July 23, 2020 (cites milk thistle liver claims on a hangover product). FDA, 2020. fda.gov
  16. FDA Sends Warning Letters to Seven Companies Illegally Selling Hangover Products (Constituent Update, July 29, 2020). FDA, 2020. fda.gov
  17. Liu L, et al. In vitro inhibitory effects of dihydromyricetin on human liver cytochrome P450 enzymes. Pharm Biol 55(1):1868-1874. 2017. PubMed
  18. Liu L, et al. Determination of dihydromyricetin in rat plasma by LC-MS/MS and its application to a pharmacokinetic study. Pharm Biol 55(1):657-662. 2017. PubMed
  19. Understanding the Dangers of Alcohol Overdose (updated December 2025). NIAAA / NIH, 2025. niaaa.nih.gov
  20. SAMHSA's National Helpline. SAMHSA / HHS, 2026. samhsa.gov
  21. Dietary Guidelines for Americans, 2025–2030 (released Jan 7, 2026). USDA / HHS, 2026. cdn.realfood.gov
  22. Hangovers (updated December 2025). NIAAA / NIH, 2025. niaaa.nih.gov

Published by Fuller Health, which makes After Party. This article is general information, not medical advice: talk to a doctor or pharmacist about your own health, medicines and drinking. Last reviewed October 9, 2026. How we research and write.

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