Nature's Bounty Milk Thistle, 250 mg, 200 Capsules supplement bottle
Nature's Bounty

Milk Thistle, 250 mg, 200 Capsules

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 6 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
75
Product Score Fair
86
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Milk Thistle Seed Extract(Silybum marianum)(Standardized to contain a minimum of 80% Silymarin) 250 mg **
Bioavailability Very Poor

Absorption Rating

  • Milk Thistle Seed Extract(Silybum marianum)(Standardized to contain a minimum of 80% Silymarin) Poor
Other Ingredients Excellent

Fillers & Additives

  • Rice Flour
  • Dicalcium Phosphate
  • Gelatin
  • Silica
  • Vegetable Magnesium Stearate
Efficacy Excellent

Dosage Analysis

  • Milk Thistle Seed Extract(Silybum marianum)(Standardized to contain a minimum of 80% Silymarin) 250 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Milk Thistle Seed Extract(Silybum marianum)(Standardized to contain a minimum of 80% Silymarin) 250 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$36$35$34$33$32 Mar 12 $34.00
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Nature's Bounty

Founded 1971 · Ronkonkoma, New York, USA · 156 products · naturesbounty.com

Certifications

6 certifications
Clean Label Project Verified Source
Consumerlab Verified
Health Canada Licensed Verified Source
Labdoor Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source

Violation History

1 incident
Recall Nature's Bounty Kids Multivitamin Gummies2023-06-02Source
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Frequently Asked Questions
Is Nature's Bounty Milk Thistle, 250 mg a good supplement?

Nature's Bounty Milk Thistle, 250 mg, 200 Capsules received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 1 active ingredients All 5 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Nature's Bounty, holds a brand trust score of 86/100 with 6 verified certifications including Clean Label Project, Consumerlab, Health Canada Licensed, Labdoor.

What are the ingredients in Nature's Bounty Milk Thistle, 250 mg?

Nature's Bounty Milk Thistle, 250 mg contains 1 active ingredients: Milk Thistle Seed Extract(Silybum marianum)(Standardized to contain a minimum of 80% Silymarin) (250 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Bounty Milk Thistle, 250 mg safe to take?

Nature's Bounty Milk Thistle, 250 mg, 200 Capsules has been analyzed for ingredient safety across all its components. All 5 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Nature's Bounty a trustworthy supplement brand?

Nature's Bounty receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1971 and headquartered in Ronkonkoma, New York, USA, the company offers 156 products in their lineup. They hold 6 verified certifications including Clean Label Project, Consumerlab, Health Canada Licensed, Labdoor. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature's Bounty has 1 historical regulatory incident on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.