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Milk Thistle

Silybum marianum

About Milk Thistle

Milk Thistle (Silybum marianum) is a botanical valued in herbal practice for its contribution to hepatoprotective. It belongs to the Asteraceae family, a botanical group with a deep history of medicinal use. Practitioners most often reach for it when working on liver.

The herb's documented activity covers hepatoprotective and antioxidant defence, making it a common choice whenever the goal is to support hepatoprotective. Beyond its primary action, the herb's secondary contribution to antioxidant defence extends its usefulness to clinical pictures involving cellular oxidative balance. In practice this means Milk Thistle is rarely used as a single-target intervention; it tends to fit into protocols where multiple overlapping mechanisms make it a versatile choice.

Research and traditional use both point toward supporting hepatoprotective as a core part of how Milk Thistle exerts its effects. Complementary activity on cellular oxidative balance — through neutralising free radicals and protecting cellular structures from oxidative damage — contributes to the herb's broader functional profile. Together these pathways explain why Milk Thistle shows up in protocols for otherwise quite different presentations: the same set of constituents reaches several body systems simultaneously. Current evidence places Milk Thistle in the 1 category for clinical confidence.

Milk Thistle is generally well tolerated when used appropriately. That said, individual responses vary, and certain populations — including pregnant or nursing people, children, and those with chronic medical conditions — should treat any new botanical with extra caution. Drug-herb interactions are possible with any botanical, particularly for people taking blood thinners, blood-pressure medication, sedatives, or agents metabolised through cytochrome P450 enzymes. As with any botanical supplement, consult a qualified clinician before adding Milk Thistle to your regimen, especially if you are pregnant, nursing, taking prescription medication, or managing a diagnosed condition.

Key Facts

Primary Use
Liver
Evidence Tier
1
Evidence Score
0.80 / 1.00
Typical Dosage
700 mg/day
Plant Family
Asteraceae

Common Uses

Mechanisms of Action

Safety & Considerations

Contraindications
None documented for general adult use. Consult a clinician if pregnant, nursing, or on medication.
Drug Interactions
No major interactions documented. Always disclose herbal supplements to your prescribing physician.

Symptoms Milk Thistle May Help With

Frequently asked questions

What is Milk Thistle used for?

liver support, detox, antioxidant

How much Milk Thistle should I take?

A typical dose is 700 mg/day.

Is Milk Thistle safe?

No major contraindications are documented for general adult use. Consult a clinician if pregnant, nursing, or taking medication.

Build a personalised formula

Use the Evidentia generator to combine Milk Thistle with other evidence-supported herbs tailored to your goals.

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