Integrative Therapeutics Siliphos: Is Integrative Therapeutics Siliphos safe to take every day?

Yes, Siliphos phytosome has been studied in clinical trials with daily use and has a strong safety profile. Integrative Therapeutics is a practitioner-grade brand with rigorous quality control and testing.

Integrative Therapeutics Siliphos: Can Integrative Therapeutics Siliphos interact with medications?

Silybin phytosome may affect the metabolism of certain drugs processed by the liver. Because the phytosome form has enhanced absorption, drug interactions may be more significant than with standard silymarin. Consult your healthcare provider.

Integrative Therapeutics Siliphos: Are there side effects of Integrative Therapeutics Siliphos?

Side effects are rare and generally mild. Some users may experience mild digestive upset. The phosphatidylcholine component may occasionally cause loose stools in sensitive individuals.

Integrative Therapeutics Siliphos: Is Siliphos safe for people with soy allergies?

Siliphos uses phosphatidylcholine derived from sunflower, not soy. However, always check the current label to confirm the source, as formulations can change. Contact Integrative Therapeutics directly if you have concerns.

Integrative Therapeutics Siliphos: Can I take Siliphos with other liver supplements like NAC?

Yes, Siliphos can generally be combined with other liver-supportive supplements like NAC. Many practitioners recommend this combination for comprehensive liver support. However, consult a healthcare provider for personalized guidance.

Integrative Therapeutics Siliphos: What is the recommended dosage for Integrative Therapeutics Siliphos?

The typical dose is 1-2 capsules daily, providing 160-320mg of silybin phytosome. The clinical dose range is 120-240mg daily. Take with meals for optimal absorption.

Integrative Therapeutics Siliphos: Should I take Siliphos with food?

Yes, taking Siliphos with a meal improves absorption. The phosphatidylcholine complex is designed to enhance bioavailability, and dietary fat further supports this process.

Integrative Therapeutics Siliphos: How long does it take for Siliphos to work?

Due to its enhanced bioavailability (4-10x better than standard silymarin), Siliphos may produce measurable effects more quickly than standard extracts. Most users notice improvements in liver markers within 4-8 weeks of consistent use.

Integrative Therapeutics Siliphos: Can I take Siliphos twice a day?

Yes, taking 1 capsule twice daily (320mg total) is within the safe and studied range. Splitting the dose may provide more consistent blood levels throughout the day.

Integrative Therapeutics Siliphos: How long should I continue taking Siliphos?

Siliphos can be taken long-term for ongoing liver support. Clinical studies have used silybin phytosome for months without safety concerns. Discuss the duration with your healthcare practitioner based on your individual needs.

Integrative Therapeutics Siliphos: What is Siliphos phytosome technology?

Siliphos is a patented complex of silybin (the most active component of silymarin) bound to phosphatidylcholine. This lipid-compatible complex allows silybin to cross cell membranes more efficiently, resulting in 4-10x better absorption than standard silymarin.

Integrative Therapeutics Siliphos: How is Siliphos different from regular milk thistle?

Standard milk thistle provides silymarin as a free extract with 20-50% oral bioavailability. Siliphos binds silybin to phosphatidylcholine, creating a phytosome that achieves significantly higher plasma levels. Less raw silymarin is needed because more gets absorbed.

Integrative Therapeutics Siliphos: What is phosphatidylcholine in Siliphos?

Phosphatidylcholine is a natural phospholipid that forms the backbone of cell membranes. In Siliphos, it acts as a carrier molecule that makes silybin more fat-soluble and easier for the body to absorb through the intestinal lining.

Integrative Therapeutics Siliphos: Does Siliphos contain the full silymarin complex?

Siliphos specifically contains silybin, which is the most biologically active flavonolignan in the silymarin complex. While it does not include the other silymarin components (silydianin, silychristin), silybin is responsible for the majority of liver-protective effects.

Integrative Therapeutics Siliphos: Is Integrative Therapeutics Siliphos a practitioner brand?

Yes, Integrative Therapeutics is a practitioner-grade supplement company used by naturopathic doctors, functional medicine practitioners, and other healthcare professionals. Their products undergo rigorous quality testing.

Integrative Therapeutics Siliphos: Is Siliphos more effective than standard milk thistle extract?

Clinical studies show that silybin phytosome achieves 4-10x higher plasma levels than equivalent doses of standard silymarin. This enhanced bioavailability translates to stronger liver-protective effects at lower doses.

Integrative Therapeutics Siliphos: Can Siliphos help with elevated liver enzymes?

Yes, silybin phytosome has clinical evidence for reducing elevated liver enzymes (ALT and AST). The enhanced absorption means effective liver support can be achieved with a lower amount of silybin compared to standard extracts.

Integrative Therapeutics Siliphos: Is Siliphos effective for non-alcoholic fatty liver?

Clinical trials with silybin phytosome have shown improvements in liver enzymes and liver fat in NAFLD patients. The enhanced bioavailability may make it more effective per milligram than standard silymarin for this condition.

Integrative Therapeutics Siliphos: How does Siliphos compare to Nutricost or NOW milk thistle?

Siliphos delivers a different form of milk thistle — silybin phytosome versus standard silymarin extract. While more expensive per serving, it absorbs 4-10x better. It is the premium choice for targeted liver support.

Integrative Therapeutics Siliphos: How many capsules are in a bottle of Siliphos?

Each bottle contains 120 capsules. At 1 capsule per day, this provides a 4-month supply. At 2 capsules daily, the bottle lasts 2 months.

Integrative Therapeutics Siliphos: What size are the Siliphos capsules?

The capsules are standard-sized and easy to swallow. Integrative Therapeutics uses clean capsule shells with minimal excipients, keeping the capsules compact.

Integrative Therapeutics Siliphos: How should I store Integrative Therapeutics Siliphos?

Store at room temperature in a cool, dry place away from direct sunlight. Keep the bottle sealed when not in use. The phosphatidylcholine component is stable at room temperature but avoid extreme heat.

Integrative Therapeutics Siliphos: Is Integrative Therapeutics Siliphos suitable for vegetarians?

Yes, the capsules are vegetarian-friendly. Check the label for the most current information on capsule composition, but Integrative Therapeutics generally uses hypromellose (vegetable) capsules.

Integrative Therapeutics Siliphos: Is Siliphos gluten-free?

Yes, Integrative Therapeutics Siliphos is gluten-free. The product is free from major allergens and is manufactured in a facility that follows strict quality control procedures.

Integrative Therapeutics Siliphos: Does Siliphos contain any dairy or soy?

The phosphatidylcholine in Siliphos is typically derived from sunflower, not soy. The product does not contain dairy. Always verify by checking the current product label, as formulations may be updated.

Jarrow Formulas Milk Thistle 150mg: Is Jarrow Formulas Milk Thistle 150mg safe to take every day?

Yes, milk thistle is generally considered safe for daily use. Jarrow Formulas Milk Thistle 150mg provides a well-tolerated dose of silymarin that has been used safely in clinical studies for extended periods.

Jarrow Formulas Milk Thistle 150mg: Can I take Jarrow Milk Thistle with prescription medications?

Milk thistle can interact with certain medications metabolized by the liver, including some statins and blood thinners. Consult your healthcare provider before combining Jarrow Milk Thistle with any prescription medications.

Jarrow Formulas Milk Thistle 150mg: Are there any side effects of Jarrow Formulas Milk Thistle?

Side effects are rare but may include mild digestive upset, bloating, or diarrhea. These effects are typically temporary and resolve as your body adjusts to the supplement.

Jarrow Formulas Milk Thistle 150mg: Is Jarrow Milk Thistle safe during pregnancy or breastfeeding?

Milk thistle has not been adequately studied in pregnant or breastfeeding women. It is best to avoid this supplement during pregnancy and nursing unless directed by a healthcare provider.

Jarrow Formulas Milk Thistle 150mg: Can Jarrow Milk Thistle cause allergic reactions?

Milk thistle belongs to the Asteraceae/Compositae plant family, which includes ragweed, daisies, and chrysanthemums. If you have allergies to these plants, you may want to avoid milk thistle or start with a small dose to test tolerance.

Jarrow Formulas Milk Thistle 150mg: How many Jarrow Milk Thistle capsules should I take per day?

The label recommends 1 capsule per day, but many users take 1-3 capsules daily to reach the clinical dose range of 150-450mg silymarin. Start with one capsule and increase as needed.

Jarrow Formulas Milk Thistle 150mg: Should I take Jarrow Milk Thistle with food or on an empty stomach?

Milk thistle can be taken with or without food. However, taking it with a meal that contains some fat may help with absorption since silymarin is a fat-soluble compound.

Jarrow Formulas Milk Thistle 150mg: What is the best time of day to take Jarrow Milk Thistle?

There is no specific best time, but many users prefer taking it with meals divided throughout the day. If taking one capsule daily, taking it with your largest meal is a reasonable approach.

Jarrow Formulas Milk Thistle 150mg: Can I take more than the recommended dose of Jarrow Milk Thistle?

Clinical studies have used up to 450mg of silymarin daily (3 capsules of this product) without significant adverse effects. However, it is best to stay within clinically studied dose ranges and consult a healthcare provider for higher doses.

Jarrow Formulas Milk Thistle 150mg: How long does it take for Jarrow Milk Thistle to show effects?

Most studies show benefits after 4-8 weeks of consistent daily use. Liver enzyme improvements may be detectable in blood work within 4-12 weeks depending on the individual and the condition being addressed.

Jarrow Formulas Milk Thistle 150mg: What is the active ingredient in Jarrow Formulas Milk Thistle?

The active ingredient is silymarin, a complex of flavonolignans extracted from milk thistle seeds. This product is standardized to 80% silymarin, providing 150mg of active silymarin per capsule.

Jarrow Formulas Milk Thistle 150mg: Does Jarrow Milk Thistle contain any fillers or additives?

The capsule contains cellulose, magnesium stearate, and silicon dioxide as inactive ingredients. These are standard excipients used to ensure consistent dosing and capsule stability.

Jarrow Formulas Milk Thistle 150mg: Is Jarrow Milk Thistle standardized for silymarin content?

Yes, it is standardized to 80% silymarin, which is the standard used in most clinical research. This means each 150mg capsule delivers approximately 120mg of active silymarin flavonolignans.

Jarrow Formulas Milk Thistle 150mg: What type of capsule does Jarrow Milk Thistle use?

Jarrow Formulas uses vegetarian capsules (veggie caps) made from cellulose. This makes the product suitable for vegetarians and vegans.

Jarrow Formulas Milk Thistle 150mg: Does Jarrow Milk Thistle contain soy or other common allergens?

The product is free from major allergens including soy, dairy, egg, peanuts, and tree nuts. It is also gluten-free and non-GMO verified.

Jarrow Formulas Milk Thistle 150mg: How effective is Jarrow Milk Thistle for liver support?

Silymarin has strong clinical evidence for hepatoprotective effects. At 150mg per capsule (up to 3 daily), this product delivers doses within the range shown to support liver enzyme levels and liver cell regeneration in clinical studies.

Jarrow Formulas Milk Thistle 150mg: Can Jarrow Milk Thistle help with fatty liver?

Several clinical trials suggest silymarin may help reduce liver fat and improve liver enzymes in non-alcoholic fatty liver disease (NAFLD). Doses of 280-420mg silymarin daily have shown the most consistent benefits.

Jarrow Formulas Milk Thistle 150mg: Does Jarrow Milk Thistle help after drinking alcohol?

While milk thistle is not a cure for alcohol-related liver damage, research shows that silymarin may help protect liver cells from oxidative stress caused by alcohol. It works best as a preventive measure with consistent daily use rather than as an acute remedy.

Jarrow Formulas Milk Thistle 150mg: Is standard silymarin as effective as phytosome forms?

Standard silymarin (like this product) has lower bioavailability than phytosome forms but is still clinically effective, especially at doses of 150-450mg daily. Phytosome absorbs 4-10x better but costs significantly more.

Jarrow Formulas Milk Thistle 150mg: How many capsules are in a bottle of Jarrow Milk Thistle?

Each bottle contains 200 veggie capsules. At the recommended 1 capsule per day dosage, this provides over 6 months of supply, making it an excellent value.

Jarrow Formulas Milk Thistle 150mg: What size are the Jarrow Milk Thistle capsules?

The capsules are standard-size veggie capsules that are easy to swallow for most adults. They are not oversized like some supplement tablets and go down smoothly with water.

Jarrow Formulas Milk Thistle 150mg: How should I store Jarrow Milk Thistle capsules?

Store in a cool, dry place away from direct sunlight. Keep the bottle tightly closed after each use. No refrigeration is required, but avoid storing in humid environments like bathrooms.

Jarrow Formulas Milk Thistle 150mg: Is Jarrow Milk Thistle suitable for vegans?

Yes, this product uses vegetarian capsules and contains no animal-derived ingredients, making it suitable for both vegetarians and vegans.

Best Milk Thistle Supplements (2026)

· Updated April 2026

Lab Tested, Evidence Ranked

Supplement Science Editorial Team·Evidence-Based Supplement Research

Published Mar 11, 2026·Reviewed Apr 22, 2026

2,500+Clinical Studies Cited

4Milk Thistle (Silymarin) products evaluated

This content is for informational purposes only and does not constitute medical advice. Statements about dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary — consult your healthcare provider before starting any supplement. Full disclaimer

Our Verdict

The best milk thistle supplement uses a standardized extract delivering 80% silymarin at 150-300mg per serving, with phytosome forms offering superior bioavailability for those willing to pay a premium.

Best By Category

#1Best Overall / Best Bioavailability

Integrative Therapeutics Siliphos

Buy Nowon Amazon

#3Best Value

NOW Foods Silymarin 300mg

Buy Nowon Amazon

#4Most Trusted Brand

Nature's Way Milk Thistle

Buy Nowon Amazon

The best milk thistle supplement delivers 80% standardized silymarin at 150-300mg per serving.

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We evaluated milk thistle supplements based on silymarin standardization, bioavailability technology, dose adequacy, third-party testing, and value. Our picks prioritize clinically studied formulations with verified silymarin content.

As an Amazon Associate, we earn from qualifying purchases. Some links below are affiliate links — this doesn't affect our editorial independence or product ratings. How we evaluate products

How We Chose These Products

Products are ranked using our published scoring methodology — evidence strength, dose adequacy, ingredient form, third-party testing signals, value, and clean-label factors are weighted across the 5 criteria below. Commercial relationships do not determine our editorial rankings.

Silymarin Standardization

30%

Extract should be standardized to 80% silymarin flavonolignans (silybin, silydianin, silychristin). This is the standard used in clinical trials and European pharmacopoeias.

Bioavailability

25%

Standard silymarin has low oral bioavailability (20-50%). Phytosome technology (silymarin bound to phosphatidylcholine) improves absorption 4-10x and achieves higher plasma levels.

Dose Adequacy

20%

Standard extract: 150-300mg silymarin per serving (often 200-450mg extract at 80% = 160-360mg silymarin). Phytosome: 120-240mg silybin phytosome daily.

Third-Party Testing

15%

Independent verification of silymarin content, heavy metals, and pesticide residues. Milk thistle can accumulate heavy metals depending on soil conditions.

Value

10%

Cost per serving adjusted for silymarin content and bioavailability technology.

#1 Top Pick

Siliphos

Integrative Therapeutics

196 Amazon reviews

9.2/10

4.6

Uses the patented Siliphos phytosome — silybin bound to phosphatidylcholine for 4-10x better absorption than standard silymarin. Clinical studies show phytosome formulations achieve significantly higher plasma silybin levels. Integrative Therapeutics is a practitioner-grade brand used by healthcare professionals.

IngredientSilybin Phytosome (silybin + phosphatidylcholine)

Dose160mg silybin phytosome per capsule

FormCapsule

TestingThird-Party Tested

160mg silybin phytosome per capsuleClinical range: 420-600mg silymarin daily (divided into 2-3 doses)

Below clinical dose

$0.78/serving$46.50 · 120 Capsules

Pros

Patented Siliphos phytosome technology
4-10x better absorption than standard extract
Practitioner-grade quality

Cons

Premium price ($0.50/serving)
Less familiar brand for consumers

Gluten-freeNon-GMO

Buy Nowon Amazon

Read full review →

Quick Comparison

#1Integrative Therapeutics Siliphos

9.2/10

Integrative Therapeutics

#1 Top Pick

196 Amazon reviews

Best for: bioavailability — phytosome form for maximum liver support

Silybin Phytosome (silybin + phosphatidylcholine) · 160mg silybin phytosome per capsule

Capsule · Third-Party Tested

$46.50

$0.78/serving

Buy Nowon Amazon

#2Jarrow Formulas Milk Thistle 150mg

9/10

Jarrow Formulas

10,348 Amazon reviews

Best for: overall milk thistle for daily liver support

Milk Thistle Extract (80% silymarin) · 150mg silymarin (80% standardized) per capsule

Capsule · Third-Party Tested

$22.99

$0.23/serving

Buy Nowon Amazon

#3NOW Foods Silymarin 300mg

8.8/10

NOW Foods

6,418 Amazon reviews

Best for: value high-dose milk thistle with liver-supportive cofactors

Milk Thistle Extract (80% silymarin) with Artichoke & Dandelion · 300mg silymarin (from 375mg extract at 80%) per capsule

Capsule · GMP Certified, Third-Party Tested

$24.99

$0.25/serving

Buy Nowon Amazon

#4Nature's Way Milk Thistle

8.5/10

Nature's Way

620 Amazon reviews

Best for: Most trusted herbal brand for milk thistle

Milk Thistle Seed Extract (80% silymarin) · 175mg silymarin per capsule

Capsule · TRU-ID Certified, Third-Party Tested

$27.10

$0.23/serving

Buy Nowon Amazon

#	Product	Best For	Ingredient & Dose	Form & Testing	Price	Rating
1	Integrative Therapeutics Siliphos #1 Top Pick 196 Amazon reviews	bioavailability — phytosome form for maximum liver support	Silybin Phytosome (silybin + phosphatidylcholine) 160mg silybin phytosome per capsule	Capsule 120 Capsules Third-Party Tested	$46.50 $0.78/serving	9.2/10	Buy Nowon Amazon
2	Jarrow Formulas Milk Thistle 150mg 10,348 Amazon reviews	overall milk thistle for daily liver support	Milk Thistle Extract (80% silymarin) 150mg silymarin (80% standardized) per capsule	Capsule Third-Party Tested	$22.99 $0.23/serving	9/10	Buy Nowon Amazon
3	NOW Foods Silymarin 300mg 6,418 Amazon reviews	value high-dose milk thistle with liver-supportive cofactors	Milk Thistle Extract (80% silymarin) with Artichoke & Dandelion 300mg silymarin (from 375mg extract at 80%) per capsule	Capsule GMP Certified, Third-Party Tested	$24.99 $0.25/serving	8.8/10	Buy Nowon Amazon
4	Nature's Way Milk Thistle 620 Amazon reviews	Most trusted herbal brand for milk thistle	Milk Thistle Seed Extract (80% silymarin) 175mg silymarin per capsule	Capsule 120 Capsules TRU-ID Certified, Third-Party Tested	$27.10 $0.23/serving	8.5/10	Buy Nowon Amazon

Detailed Reviews

#1 Top Pick

Integrative Therapeutics Super Milk Thistle X - Herbal Supplement for Liver Health Support with Milk Thistle, Licorice Root Extract & More* - Gluten-Free & Dairy-Free - 120 Capsules (120 Servings)

Integrative Therapeutics

196 Amazon reviews

9.2/10

(196)

Gluten-freeNon-GMO

IngredientSilybin Phytosome (silybin + phosphatidylcholine)

Dose160mg silybin phytosome per capsule

FormCapsule

TestingThird-Party Tested

160mg silybin phytosome per capsuleClinical range: 420-600mg silymarin daily (divided into 2-3 doses)

Below clinical dose

$0.78/serving$46.50 · 120 Capsules

Ideal for: bioavailability — phytosome form for maximum liver support

Not ideal for: Budget shoppers or those who prefer standard milk thistle extracts.

Pros

Patented Siliphos phytosome technology
4-10x better absorption than standard extract
Practitioner-grade quality
Clinically studied delivery system

Cons

Premium price ($0.50/serving)
Less familiar brand for consumers
Phytosome (not raw silymarin)
Smaller servings per container

Buy Nowon Amazon

Read full Silybin Phytosome (silybin + phosphatidylcholine)guide →

Jarrow Formulas Milk Thistle Supplement 150 mg. 30:1 Milk Thistle Extract Standardized to 80% Total Flavonoids, Dietary Supplement for Liver Function Support, 200 Veggie Capsules, Up to 200 Day Supply

Jarrow Formulas

10,348 Amazon reviews

9/10

(10,348)

Gluten-freeNon-GMO

Delivers 150mg of silymarin standardized to 80% in a clean formula. Jarrow Formulas has a strong reputation for extract quality and third-party testing. Ideal for daily liver support at an excellent price. Can take 1-3 capsules daily to match clinical dose ranges.

IngredientMilk Thistle Extract (80% silymarin)

Dose150mg silymarin (80% standardized) per capsule

FormCapsule

TestingThird-Party Tested

150mg silymarin (80% standardized) per capsuleClinical range: 420-600mg silymarin daily (divided into 2-3 doses)

Below clinical dose

$0.23/serving

Ideal for: overall milk thistle for daily liver support

Not ideal for: Those seeking maximum bioavailability (phytosome form is better).

Pros

80% standardized silymarin
Excellent price at $0.12/serving
Trusted Jarrow Formulas quality
Flexible dosing (1-3 capsules)

Cons

Standard bioavailability (not phytosome)
Capsule form
No absorption enhancers

Buy Nowon Amazon

Read full Milk Thistle Extract (80% silymarin)guide →

NOW Foods Supplements, Silymarin Milk Thistle Extract 300 mg with Artichoke and Dandelion, Double Strength, Supports Liver Function*, 200 Veg Capsules

NOW Foods

6,418 Amazon reviews

8.8/10

(6,418)

Gluten-freeNon-GMOVegan

Delivers a generous 300mg of silymarin (from 375mg extract at 80%) per capsule — double the dose of most competitors. Enhanced with artichoke and dandelion extracts for additional liver support. GMP certified with third-party testing. Outstanding value at $0.14/serving for the high dose.

IngredientMilk Thistle Extract (80% silymarin) with Artichoke & Dandelion

Dose300mg silymarin (from 375mg extract at 80%) per capsule

FormCapsule

TestingGMP Certified, Third-Party Tested

300mg silymarin (from 375mg extract at 80%) per capsuleClinical range: 420-600mg silymarin daily (divided into 2-3 doses)

Partial dose

$0.25/serving

Ideal for: value high-dose milk thistle with liver-supportive cofactors

Not ideal for: Those wanting a simple single-ingredient milk thistle product.

Pros

High 300mg silymarin dose per capsule
Added artichoke and dandelion
GMP certified and third-party tested
Excellent value for the dose

Cons

Multi-ingredient formula
Standard bioavailability
May be too high dose for some

Buy Nowon Amazon

Read full Milk Thistle Extract (80% silymarin) with Artichoke & Dandelionguide →

Nature's Way Milk Thistle, Supports Liver Function & Detox Pathways*, 175 mg Milk Thistle Seed Extract Standardized to 80% Silymarin per Serving, Vegan, 120 Capsules (Packaging May Vary)

Nature's Way

620 Amazon reviews

8.5/10

(620)

Gluten-freeNon-GMOVegan

Nature's Way is one of the most established herbal supplement brands with TRU-ID certification — DNA-based verification of botanical identity. Their milk thistle extract is standardized to 80% silymarin with a clean label. Decades of brand heritage in herbal products.

IngredientMilk Thistle Seed Extract (80% silymarin)

Dose175mg silymarin per capsule

FormCapsule

TestingTRU-ID Certified, Third-Party Tested

175mg silymarin per capsuleClinical range: 420-600mg silymarin daily (divided into 2-3 doses)

Below clinical dose

$0.23/serving$27.10 · 120 Capsules

Ideal for: Most trusted herbal brand for milk thistle

Not ideal for: Those needing a high-dose or enhanced-absorption formula.

Pros

TRU-ID certified (DNA verified identity)
Established herbal brand
80% standardized silymarin
Most affordable option

Cons

Moderate dose per capsule
Standard bioavailability
No additional cofactors
Basic formula

Buy Nowon Amazon

Read full Milk Thistle Seed Extract (80% silymarin)guide →

Pairs Well With

Frequently taken together based on complementary benefits

TUDCA (Tauroursodeoxycholic Acid)

Double Wood Supplements TUDCA 500mg

500mg TUDCA per serving (2 capsules)

(5,197)$0.42/serving

Buy Nowon Amazon

Dandelion Root

Peak Performance Organic Dandelion Root Capsules

1,500mg per serving (2 capsules)

(395)$0.30/serving

Buy Nowon Amazon

Browse all supplement comparisons →

How to Choose

Standard Silymarin vs Phytosome: Which to Choose

Standard silymarin extracts (80% standardization) are effective and affordable but have low oral bioavailability (20-50% absorption). Phytosome technology binds silybin to phosphatidylcholine, creating a lipid-compatible complex that absorbs 4-10x better. Choose phytosome if you have specific liver concerns requiring maximum support. Standard extracts are fine for general liver maintenance.

Dose Guidelines

Standard extract: 150-450mg silymarin daily, divided into 2-3 doses with meals. Phytosome (Siliphos): 120-240mg daily. For liver support during medication use or alcohol consumption, higher end of the range is appropriate. For general maintenance, lower doses suffice. Milk thistle has an excellent safety profile with minimal side effects.

Ready to Buy?

Integrative Therapeutics Siliphos

9.2/10$0.78/servingBest for: bioavailability — phytosome form for maximum liver support

Evidence:Meta-analysis (2008) · 19 RCTs · moderate confidence[#1]

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Read Our Full Milk Thistle (Silymarin) Research Guide

Evidence level, dosage, side effects, and more →

Already taking supplements?

Check how Milk Thistle (Silymarin) fits with your current stack — interactions, timing, and optimization →

Related Supplements

TUDCA (Tauroursodeoxycholic Acid)Moderate

Bottom line: TUDCA is a potent bile acid that reduces ER stress and protects liver cells. Take 250-500mg daily for general support or up to 1500mg for cholestatic conditions.

Top picks →

Artichoke ExtractModerate

Bottom line: Artichoke extract is a well-tolerated choleretic that boosts bile flow and lowers cholesterol. Take 600-1200mg daily for digestive and liver support.

PhosphatidylcholineModerate

Bottom line: Phosphatidylcholine repairs hepatocyte membranes and fights fatty liver. Take 900-1800mg polyenylphosphatidylcholine daily for liver membrane support.

Glutathione (Liver Support)Strong

Bottom line: Glutathione is the liver's master detoxifier and antioxidant. Take 500-1000mg liposomal glutathione daily or use NAC as a precursor.

Alpha Lipoic Acid (Liver Support)Moderate

Bottom line: ALA is a versatile antioxidant that recycles glutathione and reduces liver inflammation. Take 300-600mg R-ALA daily for NAFLD and liver protection.

Related Conditions

Liver Health

Frequently Asked Questions

What is the best milk thistle supplement?

Jarrow Formulas Milk Thistle 150mg is our top overall pick for most people — standardized to 80% silymarin at a great price. For maximum absorption, Integrative Therapeutics Siliphos uses phytosome technology that absorbs 4-10x better than standard extracts.

How much milk thistle should I take daily?

For standard silymarin extracts: 150-450mg silymarin daily (typically 200-600mg of 80% extract), divided into 2-3 doses with meals. For phytosome forms: 120-240mg daily. Milk thistle has an excellent safety profile and can be taken long-term.

Does milk thistle actually help the liver?

Yes. Silymarin (the active complex in milk thistle) has hepatoprotective effects supported by decades of research. ^[1] It acts as an antioxidant, stabilizes liver cell membranes, stimulates liver cell regeneration, and reduces inflammation. A meta-analysis of 19 controlled trials found significantly lower liver-related mortality in silymarin-treated patients versus placebo (10.0% vs 17.3%, p=0.01). ^[1] Phytosome forms (silybin-phosphatidylcholine) offer enhanced bioavailability over standard extracts. ^[2] Silymarin is approved as a supportive treatment for liver conditions in Germany and other European countries.

Evidence:Meta-analysis (2008) · 19 RCTs · moderate confidence[#1]

Continue Reading

Supplement Guide

TUDCA (Tauroursodeoxycholic Acid)

Bottom line: TUDCA is a potent bile acid that reduces ER stress and protects liver cells. Take 250-500mg daily for general support or up to 1500mg for cholestatic conditions.

Condition Guide

Liver Health

References

Meta-analysisSaller R, Brignoli R, Melzer J, Meier R (2008). An updated systematic review with meta-analysis for the clinical evidence of silymarin. Forschende Komplementärmedizin. DOI PubMed
ReviewKidd P, Head K (2005). A review of the bioavailability and clinical efficacy of milk thistle phytosome: a silybin-phosphatidylcholine complex (Siliphos). Alternative Medicine Review. PubMed