Klean Athlete Klean-D - NSF Certified for Sport, 5000 IU, 100 Tablets supplement bottle
Klean Athlete

Klean-D - NSF Certified for Sport, 5000 IU, 100 Tablets

What We Researched
1 active ingredient analyzed · 4 inactive ingredients decoded · 3 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
93
Product Score Excellent
87
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D3 (cholecalciferol) 5000 IU 1,250%
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (cholecalciferol) Good
Other Ingredients Excellent

Fillers & Additives

  • Cellulose
  • Croscarmellose Sodium
  • Calcium Carbonate
  • Silica and vegetable stearate
Efficacy Very Good

Dosage Analysis

  • Vitamin D3 (cholecalciferol) 5000 IU High

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (cholecalciferol) 5000 IU 1,250%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Silica and vegetable stearate Unknown

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$19$18$17$16$15 Mar 12 $16.80
Vitacost

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

Brand Trust Report
Klean Athlete

Founded 2012 · Pittsburgh, Pennsylvania, United States · 15 products · kleanathlete.com/

Certifications

3 certifications
Nsf Certified For Sport Verified Source
Fda Gmp Inspections Verified Source
Nsf Gmp Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source
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Frequently Asked Questions
Is Klean Athlete Klean-D - NSF Certified for Sport, 5000 IU a good supplement?

Klean Athlete Klean-D - NSF Certified for Sport, 5000 IU, 100 Tablets 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 with 100 servings per container. Of the 4 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Klean Athlete, holds a brand trust score of 87/100 with 3 verified certifications including Nsf Certified For Sport, Fda Gmp Inspections, Nsf Gmp.

What are the ingredients in Klean Athlete Klean-D - NSF Certified for Sport, 5000 IU?

Klean Athlete Klean-D - NSF Certified for Sport, 5000 IU contains 1 active ingredients: Vitamin D3 (cholecalciferol) (5000 IU). Notable high-dose ingredients include Vitamin D3 at 1,250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Klean Athlete Klean-D - NSF Certified for Sport, 5000 IU safe to take?

Klean Athlete Klean-D - NSF Certified for Sport, 5000 IU, 100 Tablets 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 Klean Athlete a trustworthy supplement brand?

Klean Athlete receives a brand trust score of 87/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2012 and headquartered in Pittsburgh, Pennsylvania, United States, the company offers 15 products in their lineup. They hold 3 verified certifications including Nsf Certified For Sport, Fda Gmp Inspections, Nsf Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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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.