PlainVitamins

botanical

Milk Thistle supplements

Half of the 1,277 milk thistle supplements in the NIH label database that print an amount list 175 mg or less per serving; the middle half list 90 mg to 300 mg (DSLD version 9.4.0, January 2026). The 243 products whose only supplement ingredient is milk thistle list a median of 300 mg.

Products listing it
2,3081,277 print an amount; 1,002 list it inside a blend without an amount
Median per serving
175 mgmiddle half 90 mg to 300 mg

How much milk thistle do supplements contain?

The median product lists 175 mg per serving. One in ten lists 50 mg or less, one in ten 500 mg or more. The amount printed most often is 100 mg (119 products).

Products by amount of milk thistle per serving

1,277 products, log scale; extreme 0.2% at each end left out of the drawing.

Milk Thistle: products by amount per serving3 mg10 mg100 mg1,000 mg
Milk Thistle: products by amount per serving3 mg10 mg30 mg100 mg300 mg1,000 mg
Milk Thistle: products by amount per serving3 mg10 mg30 mg100 mg300 mg1,000 mg
Milk Thistle: products by amount per serving3 mg10 mg30 mg100 mg300 mg1,000 mg
Milk Thistle: products by amount per serving3 mg10 mg30 mg100 mg300 mg1,000 mg
The amounts printed most often
Amount per servingProductsFor example
100 mg119 Milk Thistle (IVL Institute For Vibrant Living); PaleoCleanse Functional Detoxification Powder (Designs for Health); Total Joint Support (Nutri-West)
200 mg110 Milk Thistle plus Picrorhiza (GNC Herbal Plus Standardized); Milk Thistle (GNC Herbal Plus Standardized); Liver Support (GNC Herbal Plus Formula)
250 mg101 Silymarin Milk Thistle (Nature's Bounty); Viral-Protec (Xtendlife); Silymarin Milk Thistle 250 mg (Vitamin World)
50 mg96 Fenugreek Plus (Botanic Choice); Special Two (Vitabase); ProtoClear Detoxification Formula (Protocol For Life Balance)
300 mg94 Diabet-Eze (Xtendlife); Sil-150 (Integrative Therapeutics); Ultimate Liver Plus (Dr. Stan Guberman)
150 mg57 Natural Detox Colon Cleansing Formula (Windmill Rx Premium Vitamins); BioFoundation-G (Bioclinic Naturals); Heprenew (Physician's Signature)
175 mg56 Beauty Sleep (ResVitale); Milk Thistle Extract-Plus 175 mg (Earth Wise Vitamins & Supplements); Milk Thistle 175 mg (VitaCeutical Labs)
500 mg44 Silymarin Milk Thistle (Herbal Authority); Derma-D (Zahler); Arsenal Training Packs (MET-Rx)
1,000 mg32 Milk Thistle 500 mg (Vitamin World); Concentrated Extract Milk Thistle 1000 mg (Spring Valley); Pure Milk Thistle 4:1 Pure Extract Powder (Hard Rhino)
75 mg29 Liver Health With Milk Thistle (International Laurel Products); Skin, Hair & Nails (Innate Response Formulas); Vegan Protect (MegaFood)

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most milk thistle?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 175 mg; those entered in 2025, 200 mg.

Median milk thistle per serving by the year the label entered DSLD (years with 20+ products)
YearProductsMedian per serving
201121175 mg
201241175 mg
201381167 mg
201467150 mg
201549175 mg
201645200 mg
201784175 mg
201854145 mg
201978150 mg
2020134175 mg
2021122187.5 mg
2022105200 mg
2023127200 mg
2024164200 mg
2025105200 mg

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing milk thistle by DSLD product type

Milk Thistle by product typeOther Combinations767Botanical448Botanical with Nutrients60Non-Nutrient/Non-Botanical1Amino acid/Protein1
Milk Thistle by product typeOther Combinations767Botanical448Botanical with Nutrients60Non-Nutrient/Non-Botanical1Amino acid/Protein1
Milk Thistle by product typeOther Combinations767Botanical448Botanical with Nutrients60Non-Nutrient/Non-Botanical1Amino acid/Protein1
Milk Thistle by product typeOther Combinations767Botanical448Botanical with Nutrients60Non-Nutrient/Non-Botanical1Amino acid/Protein1
Milk Thistle by product typeOther Combinations767Botanical448Botanical with Nutrients60Non-Nutrient/Non-Botanical1Amino acid/Protein1

Brands listing it most: NOW (28), Nature's Way (26), Protocol For Life Balance (22), Xtendlife (16), Douglas Laboratories (15), Seeking Health (13), Vibrant Health (13), Nature's Answer (13), Pure Encapsulations (13), TerraVita Premium Collection (13).

Every product listing milk thistle

2,308 products, A to Z by name (page 44 of 47), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

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