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Milk Thistle 30:1 Extract

Jarrow Formulas
4.7
★ ★ ★ ★ ★
(23533 ratings)
Milk Thistle 150 mg
Product Image
Score78
A focused, low-cost concentrated extract with a long supply. Standardization and plant-part gaps limit potency confidence.
How scoring works
Quantity:100 Veggie Cap(s) • (100 servings)
Goals:
Detoxification

Score 78

A focused, low-cost concentrated extract with a long supply. Standardization and plant-part gaps limit potency confidence.
How scoring works
$9.80($0.09 per serving)
Vitacost
$ 16.33
iHerb
$ 16.51
Daily Vita
$ 13.99
Amazon
$ 16.51
iHerb
$ 16.51
Daily Vita
$ 9.80
Vitacost
$ 15.19
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Analysis

The capsule provides 150 mg milk thistle extract in a 30:1 format. A single active keeps the formula straightforward and easy to compare by serving size.

The label does not identify plant part or active silymarin content. Concentration ratio alone cannot establish the final flavonolignan dose.

One hundred single-capsule servings provide strong value and convenience. It fits basic supplementation better than buyers seeking verified standardized potency.

Who is it for
  • Adults seeking an economical milk thistle capsule
  • People who prefer one active ingredient
  • Users who want a long supply
Best for
  • Basic daily milk thistle use
  • One-capsule convenience
  • Serving value

Pros

  • 150 mg extract is disclosed
  • 30:1 concentration is stated
  • Single-active formula
  • One hundred servings
  • One capsule per serving

Cons

  • No silymarin standardization
  • Plant part is not stated
  • No absorption feature
  • Effective active dose is uncertain

Warnings

  • Milk thistle may cause a reaction in people sensitive to ragweed-family plants.
  • Stop use if digestive discomfort persists.

Nutrient quality

75 High impact

A concentrated and focused extract offers plausible dose depth without padding. Missing plant-part and active-marker details limit confidence in quality.

.

Ingredient transparency

76 High impact

The active amount is clear and no proprietary blend is used. Source, standardization, directions, and inactive ingredients remain incomplete.

.

Customer satisfaction

70 High impact

The aggregate satisfaction signal is favorable and has some support from the supplied volume. Specific experience details are absent, so complaint patterns and purpose fit cannot be confirmed.

.

Value for money

92 Highest impact

Concentrated sourcing and exceptionally accessible serving value make the product stand out. Incomplete active-yield detail is the main limitation.

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Goals

Detoxification
Detoxification
Impact
High effect
A- Goal FitC Strength of SupportC- CoverageA Formula Quality
Milk Thistle · 150 mg

Milk thistle provides direct liver-protection and antioxidant support. The single-active formula keeps the intended role clear.

The extract amount may contribute meaningfully, but its concentration and silymarin yield are not disclosed. That missing standardization reduces confidence in potency.

Study evidence
Milk Thistle Supportive 46 studies

Ingredients

IngredientAmount per serving
Milk Thistle Extract
150 mg
Gluten Free Adults 18–50 Vegan Vegetarian
Report overview
Milk Thistle · 150 mg OverallScore27
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyB+ Value

The 30:1 extract offers a low serving cost and indicates a concentrated ingredient. Its plant part, silymarin percentage, and resulting active dose are not disclosed. A basic dry capsule provides no stated support for silymarin absorption.

View ingredientView products
Loading alternative details
84 Performance

Milk Thistle

Kroeger Herb Products Co.
<p>A separate silymarin amount from milk thistle seed makes potency unusually easy to assess. The clearer active profile or delivery form makes potency easier to judge than in the original, though any broader companion-ingredient role may be lost.</p>
82 Performance

Super Milk Thistle

Nature's Way
<p>Well-disclosed silymarin and silybin amounts form a strong milk thistle core, with artichoke adding relevant bile support. The clearer active profile or delivery form makes potency easier to judge than in the original, though any broader companion-ingredient role may be lost.</p>
86 Performance

Milk Thistle Extract 175 mg

Lake Avenue Nutrition
<p>A meaningful total silymarin amount from milk thistle seed makes potency straightforward to assess. The clearer active profile or delivery form makes potency easier to judge than in the original, though any broader companion-ingredient role may be lost.</p>
87 Budget

Milk Thistle Extract 175 mg

Lake Avenue Nutrition
<p>A meaningful total silymarin amount from milk thistle seed makes potency straightforward to assess. It costs less per serving than the original, while differences in extract amount, delivery format, or companion herbs should guide the final choice.</p>
80 Budget

Silymarin Complex

California Gold Nutrition
<p>Milk thistle anchors a coherent liver-support combination with dandelion, artichoke, turmeric, ginger, and black pepper. It costs less per serving than the original, while differences in extract amount, delivery format, or companion herbs should guide the final choice.</p>
78 Budget

Milk Thistle 250 mg

Swanson Superior Herbs
<p>Seed extract plus whole milk thistle creates a focused and substantial-looking formula. Fewer than three eligible products cost less per serving than the original, so this is a low-cost fallback rather than a strictly cheaper substitute.</p>
85 Value

Milk Thistle

Paradise
<p>A substantial stated silymarin amount provides focused milk thistle potency in a simple formula. The balance of disclosed milk-thistle quality and serving economy offers a favorable value trade-off, with formula breadth and delivery form remaining practical differences.</p>
84 Value

Milk Thistle

Nature's Answer
<p>A meaningful stated silymarin amount is paired with a small whole-herb component in a focused formula. The balance of disclosed milk-thistle quality and serving economy offers a favorable value trade-off, with formula breadth and delivery form remaining practical differences.</p>
79 Value

Milk Thistle

Solgar
<p>A standardized extract paired with whole milk thistle powder gives the formula a sensible, focused structure. The balance of disclosed milk-thistle quality and serving economy offers a favorable value trade-off, with formula breadth and delivery form remaining practical differences.</p>
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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Are alterations needed in Silybum marianum (Silymarin) administration practices? A novel outlook and meta-analysis on randomized trials targeting liver injury.
    Shahsavari K; Ardekani SS; Ardekani MRS; Esfahani MM; Kazemizadeh H; Jamialahmadi T; Iranshahi M; Khanavi M; Hasanpour M · BMC complementary medicine and therapies · 2025
    Meta-analysis3,545 participants55 studies pooledDetoxification forMilk Thistle
  2. Impact of Silymarin Supplements on Liver Enzyme Levels: A Systematic Review.
    Calderon Martinez E; Herrera D; Mogan S; Hameed Z; Jangda AA; Khan TJ; Mroke P; Sajid S; Shah YR; Baig I · Cureus · 2023
    Systematic review3,846 participants29 studies pooledDetoxification forMilk Thistle
  3. The effect of silymarin on liver enzymes in patients taking isotretinoin: A randomized clinical trial.
    Mirnezami M; Jafarimanesh H; Rezagholizamenjany M; Alimoradian A; Ranjbaran M · Dermatologic therapy · 2021
    Randomized trial74 participantsDetoxification forMilk Thistle
  4. A double-blinded randomized controlled trial of silymarin for the prevention of antituberculosis drug-induced liver injury.
    Luangchosiri C; Thakkinstian A; Chitphuk S; Stitchantrakul W; Petraksa S; Sobhonslidsuk A · BMC complementary and alternative medicine · 2016
    Randomized trial55 participantsDetoxification forMilk Thistle
  5. Effect of 8 Weeks milk thistle powder (silymarin extract) supplementation on fatty liver disease in patients candidates for bariatric surgery.
    Mirhashemi SH; Hakakzadeh A; Yeganeh FE; Oshidari B; Rezaee SP · Metabolism open · 2022
    Observational studyDetoxification forMilk Thistle
  6. A randomized controlled trial to assess the safety and efficacy of silymarin on symptoms, signs and biomarkers of acute hepatitis.
    El-Kamary SS; Shardell MD; Abdel-Hamid M; Ismail S; El-Ateek M; Metwally M; Mikhail N; Hashem M; Mousa A; Aboul-Fotouh A; El-Kassas M; Esmat G; Strickland GT · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2009
    Randomized trial105 participantsDetoxification forMilk Thistle
  7. Evaluation of Hepatoprotective Effect of Silymarin Among Under Treatment Tuberculosis Patients: A Randomized Clinical Trial.
    Marjani M; Baghaei P; Kazempour Dizaji M; Gorji Bayani P; Fahimi F; Tabarsi P; Velayati AA · Iranian journal of pharmaceutical research : IJPR · 2016
    Randomized trial70 participantsDetoxification forMilk Thistle
  8. The hepatorenal protective effects of silymarin in cancer patients receiving chemotherapy: a randomized, placebo-controlled trial.
    Erfanian SS; Ansari H; Javanmard SH; Amini Z; Hajigholami A · BMC complementary medicine and therapies · 2024
    Randomized trial100 participantsDetoxification forMilk Thistle
  9. A randomized double-blind, placebo-controlled study of therapeutic effects of silymarin in β-thalassemia major patients receiving desferrioxamine.
    Moayedi B; Gharagozloo M; Esmaeil N; Maracy MR; Hoorfar H; Jalaeikar M · European journal of haematology · 2013
    Randomized trial97 participantsDetoxification forMilk Thistle
  10. Effect of aerobic training with silymarin consumption on glycemic indices and liver enzymes in men with type 2 diabetes.
    Ghalandari K; Shabani M; Khajehlandi A; Mohammadi A · Archives of physiology and biochemistry · 2023
    Randomized trial60 participantsDetoxification forMilk Thistle
  11. Impact of silymarin-supplemented cookies on liver enzyme and inflammatory markers in non-alcoholic fatty liver disease patients.
    Jaffar HM; Bader Ul Ain H; Tufail T; Hanif A; Malik T · Food science & nutrition · 2024
    Clinical trial64 participantsDetoxification forMilk Thistle