Herbs & botanicals
Milk Thistle
Names you may see: Silybum marianum silymarin silybin silibinin
The quick take
Milk thistle is a botanical whose extracts contain a mixture of compounds called silymarin.
A closer look
What forms will I see on a label?
Look for the extract amount and any stated silymarin content. Different preparations are not automatically equivalent.
Why people use it
It is commonly used in liver-support and detox formulas.
These are common goals and marketing uses. The evidence section below explains what research supports.
What does the evidence tell us?
Clinical results for liver conditions are conflicting or too limited for firm conclusions. It has not been shown to make alcohol or potentially liver-damaging substances safe.
What should I know before using it?
Bloating, nausea and gas can occur, along with allergy in people sensitive to related plants such as ragweed. Seek advice with medicines or suspected liver problems.
Sources & further reading
Content reviewed: September 30, 2026
General educational information. Follow the product label and seek individual advice when needed.