Silybin — answers to silibinin, a component of milk thistle
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The main active compound found in silymarin, an extract of milk thistle (Silybum marianum) seeds, often isolated and used in liver-support supplements.
Why it’s used
Taken to support liver health, based on traditional use of milk thistle and laboratory research into antioxidant and cell-protective properties.
What the evidence is for
liver enzyme markers in some clinical studies, with inconsistent overall results.
What the evidence says
The NIH National Center for Complementary and Integrative Health notes that clinical trials of milk thistle and its components, including silybin, have produced mixed results for liver conditions such as hepatitis and cirrhosis, with some studies showing modest improvements in liver enzyme levels and others showing no significant effect. Overall, evidence is not considered strong enough to confirm a clear clinical benefit.
Context
Clinical trials have used a range of formulations and doses, complicated by variable absorption of silybin, which has led to development of enhanced-bioavailability forms in some studies.
Educational information, not medical or safety advice. Consult a professional for allergies or medical concerns.