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Milk Thistle Extract 300 mg

4.8
★ ★ ★ ★ ★
(123 ratings)
Milk Thistle 300 mg
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Score77
The large supply and focused 300 mg extract are practical, but active potency and absorption remain undefined.
How scoring works
Capsule
Quantity:200 Capsule(s) • (200 servings)
Goals:
Detoxification

Score 77

The large supply and focused 300 mg extract are practical, but active potency and absorption remain undefined.
How scoring works
$27.99($0.13 per serving)
iHerb
$ 27.99
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Analysis

A 300 mg milk thistle extract in a simple capsule offers direct botanical support without unnecessary actives. Naming silymarin gives the label some useful specificity.

No silymarin percentage is provided, so the amount of active flavonolignans cannot be calculated. The label also omits the source plant part and any delivery technology that might improve absorption.

The large bottle and low serving cost make it convenient for sustained use. It is best viewed as an economical general option rather than a precisely characterized high-potency extract.

Who is it for
  • High-supply capsule buyers
  • Adults seeking economical milk thistle
Best for
  • Long-term routine use
  • A simple single-active product

Pros

  • Clearly listed extract weight
  • Silymarin is identified
  • Large capsule supply

Cons

  • No active silymarin yield
  • Source plant part is missing
  • No absorption-enhancing feature

Warnings

  • Milk thistle can cause digestive upset in some users; stop or reduce use if symptoms persist.
  • People allergic to ragweed-family plants may also react to milk thistle.
  • Milk thistle may affect blood sugar, so people using glucose-lowering medicine should discuss it with their clinician.

Nutrient quality

81 Highest impact

The named silymarin form supports basic extract relevance. The extract amount is meaningful on paper, but active yield cannot be calculated.

Ingredient transparency

75 High impact

The active ingredient has a stated amount without a hidden proprietary blend. Standardization or source details, daily-use directions, and non-active ingredients remain incomplete.

Customer satisfaction

62 Moderate impact

The supplied average rating is very strong and is supported by small review count. No detailed feedback is available to assess repeated complaints or purpose-specific experiences.

Value for money

88 Highest impact

A focused formula and low qualitative serving cost provide good practical value. Missing active-marker potency prevents a precise category comparison.

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Goals

Detoxification
Detoxification
Impact
Moderate effect
B+ Goal FitF Strength of SupportF CoverageA+ Formula Quality
Milk Thistle · 300 mg

Milk thistle is directly relevant to liver-cell protection and antioxidant support. The streamlined formula keeps its intended pathway clear.

The extract is not tied to a stated silymarin percentage, so its functional potency remains unknown. Missing plant-part and absorption details also limit confidence.

Study evidence
Milk Thistle Supportive 46 studies

Ingredients

IngredientAmount per serving
Milk Thistle extract (Silymarin)
 300 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Milk Thistle (Silymarin) · 300 mg OverallScore21
F Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyC Value

The extract comes at a very low serving cost and lists silymarin as its form. The missing standardization percentage prevents calculation of the actual silymarin dose. Plant-part sourcing and absorption technology are also not disclosed.

View ingredientView products
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84 Performance

Milk Thistle

Kroeger Herb Products Co.
A silymarin-labeled milk-thistle extract provides more assessable active disclosure than a plain plant-mass claim. Its stronger combination of formulation quality and detoxification alignment makes it a more compelling focused option, although the formula remains focused rather than broad.
82 Performance

Super Milk Thistle

Nature's Way
Clearly disclosed silybin and silymarin give the milk-thistle component unusually strong active characterization. Its stronger combination of formulation quality and detoxification alignment makes it a more compelling focused option, although the added licorice may be unsuitable for some users.
84 Performance

Milk Thistle

Nature's Answer
A silymarin-labeled milk-thistle extract provides more assessable active disclosure than a plain plant-mass claim. Its stronger combination of formulation quality and detoxification alignment makes it a more compelling focused option, although the formula remains focused rather than broad.
87 Budget

Milk Thistle Extract 175 mg

Lake Avenue Nutrition
A clearly labeled total-silymarin extract provides focused and readily assessable milk-thistle activity. A lower serving cost improves routine value, although the formula remains focused rather than broad.
77 Budget

Milk Thistle 30:1 Extract

Jarrow Formulas
A focused milk-thistle extract keeps the formula aligned with liver support, although the active silymarin yield is not stated. A lower serving cost improves routine value, although the active flavonolignan yield remains unclear.
80 Budget

Silymarin Complex

California Gold Nutrition
A silymarin-labeled milk-thistle extract provides more assessable active disclosure than a plain plant-mass claim. A lower serving cost improves routine value, although piperine can alter exposure to some medicines.
85 Value

Milk Thistle

Paradise
A silymarin-labeled milk-thistle extract provides more assessable active disclosure than a plain plant-mass claim. Favorable serving economics and a well-defined milk-thistle core create a useful quality-to-cost balance, although the formula remains focused rather than broad.
79 Value

Milk Thistle (Silymarin)

Mason Natural
A silymarin-labeled milk-thistle extract provides more assessable active disclosure than a plain plant-mass claim. Favorable serving economics and a well-defined milk-thistle core create a useful quality-to-cost balance, although the formula remains focused rather than broad.
79 Value

Milk Thistle

Solgar
A silymarin-labeled milk-thistle extract provides more assessable active disclosure than a plain plant-mass claim. Favorable serving economics and a well-defined milk-thistle core create a useful quality-to-cost balance, although the formula remains focused rather than broad.
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Sources

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

  1. 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
  2. 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
  3. 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
  4. 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
  5. 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