Wonder Laboratories D3 1000 IU supplement bottle
Wonder Laboratories

D3 1000 IU Review

What We Researched
1 active ingredient analyzed · 3 inactive ingredients decoded · 1 brand certification checked · Page generated: Sep 2026
100
Product Score Excellent
61
Brand Score Fair

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 D3 (as Cholecalciferol) 1000 IU 250%
Bioavailability Excellent

Absorption Rating

  • Vitamin D3 (as Cholecalciferol) Good
Other Ingredients Excellent

Fillers & Additives

  • Calcium Carbonate
  • Cellulose
  • Stearic Acid
Efficacy Excellent

Dosage Analysis

  • Vitamin D3 (as Cholecalciferol) 1000 IU Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin D3 (as Cholecalciferol) 1000 IU 250%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Brand Trust Report
Wonder Laboratories

Founded 1962 · White House, Tennessee, United States · 551 products · wonderlabs.com

Certifications

1 certification
Kosher Certified Source available Primary evidence

Transparency

3 claims
Third Party Testing Claim — Claimed Evidence available Evidence
In House Testing — Claimed Evidence available Evidence

Violation History

2 incidents
Prop 65 Not specified in the notice, referred to as 'the Listed Chemical'2008-10-22 Source available Primary source
Lawsuit Trademark Infringement1990 Source available Primary source
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Frequently Asked Questions
Is Wonder Laboratories D3 1000 IU a good supplement?

Wonder Laboratories D3 1000 IU 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 with 300 servings per container. All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Wonder Laboratories, holds a brand trust score of 61/100.

What are the ingredients in Wonder Laboratories D3 1000 IU?

Wonder Laboratories D3 1000 IU contains 1 active ingredients: Vitamin D3 (as Cholecalciferol) (1000 IU). Notable high-dose ingredients include Vitamin D3 at 250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Wonder Laboratories D3 1000 IU safe to take?

GoodSupp reviewed the inactive-ingredient data available for Wonder Laboratories D3 1000 IU. All 3 inactive ingredients — including capsule materials, fillers, and binders — are currently classified as safe in GoodSupp's ingredient reference data. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Wonder Laboratories a trustworthy supplement brand?

Wonder Laboratories receives a brand trust score of 61/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1962 and headquartered in White House, Tennessee, United States, the company offers 551 products in their lineup. Note: Wonder Laboratories 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.