Milk thistle has been used for centuries as a traditional herbal remedy, and modern research has focused primarily on silymarin, a complex of flavonolignans extracted from its seeds. Studies indicate that silymarin may support liver health by acting as a potent antioxidant, helping to protect liver cells from oxidative stress and promoting cellular repair processes. Research also suggests potential benefits in areas such as blood sugar regulation, cholesterol management, and skin health, though findings vary in strength and many trials have been small in scale. While milk thistle is generally well tolerated and remains one of the most widely studied herbal supplements for liver-related concerns, researchers continue to explore its mechanisms and long-term effects to better understand its full therapeutic potential.
Compare this supplementResearch suggests that milk thistle and its primary active component, silymarin, may have a beneficial effect on chol...
View studies →Research suggests that milk thistle, primarily through its active compound silymarin, shows broadly supportive effect...
View studies →Research suggests that milk thistle, and its active compounds silymarin and silibinin, show meaningful promise for sk...
View studies →Research suggests that milk thistle compounds — primarily silibinin and silymarin — may support blood sugar regulatio...
View studies →Research suggests that the currently available study linked to this topic does not directly investigate milk thistle ...
View studies →Research suggests that the single available study linked here does not directly investigate milk thistle or its activ...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 250–500 mg | Daily | General liver health and antioxidant support | Widely used standardized dose in consumer and clinical settings |
| Extract | 140–420 mg | Three times daily | Alcohol-related liver disease and alcohol recovery | Based on RCTs studying alcoholic cirrhosis and liver enzyme normalization |
| Extract | 200–400 mg | Daily | Antioxidant support and cholesterol management | Common in trials examining oxidative stress markers and lipid profiles |
| Extract | 210–600 mg | Daily | Blood sugar regulation and type 2 diabetes support | Based on RCTs showing reductions in fasting glucose and HbA1c |
| Extract | 420 mg | Daily | Liver health and hepatoprotection (standardized to 70-80% silymarin) | Common in clinical trials for chronic liver disease and hepatitis |
| Topical | 0.5–1.4 g | Daily | Skin health, acne reduction, and UV-related oxidative skin damage | Based on clinical trials using silymarin creams for acne and rosacea |