Nature's Life Super D-3, 100 mcg (4000 IU), 100 Softgels supplement bottle
Nature's Life

Super D-3, 100 mcg (4000 IU), 100 Softgels

What We Researched
1 active ingredient analyzed · 2 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
100
Product Score Excellent
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin D-3 (As Cholecalciferol) (supplying 4,000 IU of Vitamin D) 100 mcg 500%*
Bioavailability Excellent

Absorption Rating

  • Vitamin D-3 (As Cholecalciferol) (supplying 4,000 IU of Vitamin D) Good
Other Ingredients Excellent

Fillers & Additives

  • Extra Virgin Olive Oil
  • Softgel (gelatin, glycerin) and non-gmo safflower oil
Efficacy Excellent

Dosage Analysis

  • Vitamin D-3 (As Cholecalciferol) (supplying 4,000 IU of Vitamin D) 100 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D-3 (As Cholecalciferol) (supplying 4,000 IU of Vitamin D) 100 mcg 500%*

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$15$14$13$12$11 Mar 12 $13.19
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 Life

Founded 1975 · Ogden, Utah, USA · 129 products · natureslife.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
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Frequently Asked Questions
Is Nature's Life Super D-3, 100 mcg (4000 IU) a good supplement?

Nature's Life Super D-3, 100 mcg (4000 IU), 100 Softgels received a product quality score of 100/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 1 active ingredients Of the 2 inactive ingredients, 1 are rated safe and 0 are flagged for review. The manufacturer, Nature's Life, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Nature's Life Super D-3, 100 mcg (4000 IU)?

Nature's Life Super D-3, 100 mcg (4000 IU) contains 1 active ingredients: Vitamin D-3 (As Cholecalciferol) (supplying 4,000 IU of Vitamin D) (100 mcg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Life Super D-3, 100 mcg (4000 IU) safe to take?

Nature's Life Super D-3, 100 mcg (4000 IU), 100 Softgels 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 Nature's Life a trustworthy supplement brand?

Nature's Life receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1975 and headquartered in Ogden, Utah, USA, the company offers 129 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. 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.