Thorne D-5,000 125 mcg supplement bottle
Thorne

D-5,000 125 mcg Review

What We Researched
1 active ingredient analyzed · 5 inactive ingredients decoded · 10 brand certifications checked · Last updated: Aug 2026
93
Product Score Excellent
98
Brand Score Excellent

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D (as Vitamin D3) (5,000 IU) 125 mcg 625%
Bioavailability Excellent

Absorption Rating

  • Vitamin D (as Vitamin D3) (5,000 IU) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Hypromellose (Derived from Cellulose) Capsule
  • Leucine
  • Silicon Dioxide
  • Vitamin E (d-alpha tocopheryl)
Efficacy Very Good

Dosage Analysis

  • Vitamin D (as Vitamin D3) (5,000 IU) 125 mcg High

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D (as Vitamin D3) (5,000 IU) 125 mcg 625%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Hypromellose (Derived from Cellulose) Capsule Safe

It is used to encapsulate supplement ingredients.

Leucine Safe

It is used for its potential muscle-building and recovery benefits.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Vitamin E (d-alpha tocopheryl) Unknown
Brand Trust Report
Thorne

Founded 1984 · New York, NY, United States · 204 products · thorne.com

Certifications

10 certifications
Nsf Certified For Sport Verified Source
Nsf Gmp Verified Source
Fda Gmp Inspections Verified Source
NSF Certified for Sport Verified
NSF Contents Certified Verified
Informed Choice Verified
Informed Sport Verified
Eurofins Certified Supplement Verified
Eurofins Clean Sport Verified
NSF Certified Verified

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

2 incidents
Recall Captomer, Captomer-2502014-06-12Source
Prop 65 Lead2013-12-13Source
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Frequently Asked Questions
Is Thorne D-5,000 125 mcg a good supplement?

Thorne D-5,000 125 mcg received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients Of the 5 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Thorne, holds a brand trust score of 98/100 with 10 verified certifications including Nsf Certified For Sport, Nsf Gmp, Fda Gmp Inspections, NSF Certified for Sport.

What are the ingredients in Thorne D-5,000 125 mcg?

Thorne D-5,000 125 mcg contains 1 active ingredients: Vitamin D (as Vitamin D3) (5,000 IU) (125 mcg). Notable high-dose ingredients include Vitamin D at 625% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Thorne D-5,000 125 mcg safe to take?

Thorne D-5,000 125 mcg has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Thorne a trustworthy supplement brand?

Thorne receives a brand trust score of 98/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1984 and headquartered in New York, NY, United States, the company offers 204 products in their lineup. They hold 10 verified certifications including Nsf Certified For Sport, Nsf Gmp, Fda Gmp Inspections, NSF Certified for Sport. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Thorne has 2 historical regulatory incidents 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 — read our methodology. 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.