Super Strength D3-2000 IU Review
Product Analysis
Transparency Excellent
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin D3 (as Cholecalciferol) | 2000 IU | 500% |
Bioavailability Excellent
Absorption Rating
- Vitamin D3 (as Cholecalciferol) Good
Other Ingredients Excellent
Fillers & Additives
- Soybean Oil
- Gelatin
- Glycerin
- Purified Water
Efficacy Excellent
Dosage Analysis
- Vitamin D3 (as Cholecalciferol) 2000 IU Effective
Supplement Facts
| Ingredient | Amount | % Daily Value |
|---|---|---|
| Vitamin D3 (as Cholecalciferol) | 2000 IU | 500% |
Other Ingredients
Certifications
3 certifications
Transparency
5 claims
Is 21st Century Super Strength D3-2000 IU a good supplement?
21st Century Super Strength D3-2000 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 All 4 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, 21st Century, holds a brand trust score of 85/100 with 3 verified certifications including Nsf Gmp, NSF Contents Certified, NSF Certified.
What are the ingredients in 21st Century Super Strength D3-2000 IU?
21st Century Super Strength D3-2000 IU contains 1 active ingredients: Vitamin D3 (as Cholecalciferol) (2000 IU). Notable high-dose ingredients include Vitamin D3 at 500% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.
Is 21st Century Super Strength D3-2000 IU safe to take?
21st Century Super Strength D3-2000 IU has been analyzed for ingredient safety across all its components. All 4 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 21st Century a trustworthy supplement brand?
21st Century receives a brand trust score of 85/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1991 and headquartered in Tempe, Arizona, United States, the company offers 383 products in their lineup. They hold 3 verified certifications including Nsf Gmp, NSF Contents Certified, NSF Certified. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: 21st Century has 4 historical regulatory incidents on record, which are factored into the trust score.
Scan Any Supplement Instantly
Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.