About This Product
USANA Vitamin D is a vitamin supplement containing two active ingredients: Vitamin D3 (50 mcg) and Vitamin K (30 mcg) per tablet. This product received an N+ Score of 41, resulting in an 'F' grade, which denotes a below-average quality evaluation. While the label transparency is excellent at 100%, neither Vitamin D3 nor Vitamin K are present at dosages considered clinically optimal for broad support, with both listed as underdosed in the analysis. Research suggests Vitamin D may support bone health and immune function, and Vitamin K may support bone and cardiovascular health. This supplement could be considered by those looking for a foundational vitamin D source, but higher doses may be required for specific needs.
Strengths
- +Fully transparent label with individual ingredient amounts disclosed
Weaknesses
- −Several ingredients below clinically effective doses
Ingredient Analysis (2 ingredients)
| Ingredient | Amount | Status |
|---|---|---|
| Vitamin K | 30.000 mcg | Under |
| Vitamin D3 | 50.000 mcg | Under |
Clinical ranges based on NIH ODS Fact Sheets and peer-reviewed research. Status indicates whether the amount meets evidence-based thresholds.