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Milk Thistle (Silymarin)

Botanical

Also known as: Silybum marianum, Silymarin, Silybin, Milk Thistle Extract (Silybum marianum), Milk Thistle Seed Extract

A
Grade A
💊 200-400mg standardized extract 2-3x daily🎯 8 primary uses🔗 4 synergies⚠️ Review warnings

Overview

Milk thistle extract contains silymarin, a flavonoid complex traditionally used to support liver health and function. Clinical evidence suggests modest benefits for liver support, though results remain mixed across studies.

Primary Uses
Liver protectionLiver regenerationToxin exposureAlcohol supportLiver health supportHepatic functionAntioxidant supportLiver detoxification

Dosage

Typical range
200-400mg standardized extract 2-3x daily
Timing
With meals
With food
Yes, enhances absorption
Dose Tiers
Moderate
200-400 mg silymarin
Optimal
420-600 mg silymarin/day
Therapeutic
600-1,200 mg silymarin/day
Upper Limit
No established UL
Duration

Long-term use safe and appropriate

Special Populations

Those with liver concerns, alcohol users, medication users

Mechanism of Action

  • • Protects liver cell membranes
  • • Stimulates protein synthesis for regeneration
  • • Antioxidant in liver tissue
  • • May help with insulin sensitivity

Evidence Quality

Evidence Grade A

Strong evidence for liver protection

Safety & Contraindications

Serious Warnings
  • • May affect estrogen-related conditions
Contraindications
  • • Ragweed/daisy allergy
Common Side Effects
  • • Rare: mild GI upset
  • • Allergic reactions (ragweed family)
Pregnancy & Breastfeeding

Consult healthcare provider

Liver & Kidney Notes

Safe - specifically for liver support

Interactions

💊 Medications
  • • May affect CYP450 metabolism
  • • Diabetes medications (may enhance)
  • • Statins (may affect levels)
🧪 Supplements
  • • Synergistic with NAC, artichoke
🍽️ Food & Alcohol
  • • Take with food

Stacking & Synergies

Pairs Well With
NACArtichoke extractDandelionB vitamins
Avoid Combining With
None significant
Best Goal Synergies
Liver healthDetoxification

Buying Guide

What to Look For
  • • 70-80% silymarin standardization
  • • Phytosome for better absorption
Standardization Markers
Silymarin percentage (70-80%)Silybin content
Adulteration risk
Low
Practical Notes
  • • Phytosome form better absorbed
  • • Safe for long-term use
  • • Most studied liver herb
Tags
liverdetoxhepatoprotectiveantioxidantliver-supportherbaltraditional-medicine

Frequently Asked About Milk Thistle (Silymarin)

How much Milk Thistle (Silymarin) should I take?
The typical effective range is 420-600 mg silymarin/day. Individual needs vary based on age, body weight, diet, and goals — start at the lower end and adjust based on response. Always consult a healthcare provider before starting a new supplement.
When is the best time to take Milk Thistle (Silymarin)?
With meals. Consistency matters more than perfect timing — pick a daily anchor (e.g. with breakfast or before bed) and stick with it.
Should I take Milk Thistle (Silymarin) with food?
Yes, enhances absorption.
Does Milk Thistle (Silymarin) interact with medications?
Yes — known interactions include May affect CYP450 metabolism, Diabetes medications (may enhance), and Statins (may affect levels). If you take any prescription medication, talk to your doctor or pharmacist before starting Milk Thistle (Silymarin).
What does Milk Thistle (Silymarin) pair well with?
Milk Thistle (Silymarin) stacks well with NAC, Artichoke extract, and Dandelion — these combinations either improve absorption or work synergistically toward common goals.
Who should not take Milk Thistle (Silymarin)?
Milk Thistle (Silymarin) should be avoided or used with caution by people with Ragweed/daisy allergy. Pregnant or breastfeeding women should consult a healthcare provider before use.
What are the side effects of Milk Thistle (Silymarin)?
Most people tolerate Milk Thistle (Silymarin) well. The most commonly reported side effects are Rare: mild GI upset and Allergic reactions (ragweed family). Side effects are usually dose-dependent — lowering the dose often resolves them.

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Related Guides

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Educational content based on published research and our scoring methodology. Not medical advice — consult a qualified healthcare provider before starting, stopping, or changing supplements, especially if you take medications, are pregnant, or have a medical condition.