600+D3 Review
Product Analysis
Transparency Excellent
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Vitamin D3 (as Cholecalciferol) | 20 mcg | 100% |
| Calcium (as Calcium Carbonate) | 600 mg | 46% |
Bioavailability Very Good
Absorption Rating
- Vitamin D3 (as Cholecalciferol) Good
- Calcium (as Calcium Carbonate) Fair
Other Ingredients Excellent
Fillers & Additives
- Maltodextrin
- Croscarmellose Sodium
Efficacy Excellent
Dosage Analysis
- Vitamin D3 (as Cholecalciferol) 20 mcg Effective
- Calcium (as Calcium Carbonate) 600 mg Effective
Supplement Facts
| Ingredient | Amount | % Daily Value |
|---|---|---|
| Vitamin D3 (as Cholecalciferol) | 20 mcg | 100% |
| Calcium (as Calcium Carbonate) | 600 mg | 46% |
Other Ingredients
Maltodextrin Generally_safe
Certifications
3 certifications
Transparency
5 claims
Is 21st Century 600+D3 a good supplement?
21st Century 600+D3 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 2 active ingredients Of the 2 inactive ingredients, 1 are rated safe and 0 are flagged for review. 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 600+D3?
21st Century 600+D3 contains 2 active ingredients: Vitamin D3 (as Cholecalciferol) (20 mcg), Calcium (as Calcium Carbonate) (600 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.
Is 21st Century 600+D3 safe to take?
21st Century 600+D3 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 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.
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