Vitamin D-3 400 IU
Source Naturals Vitamin D-3 400 IU is a vitamin supplement providing 400 IU (10mcg) of Vitamin D3 per tablet. This product achieved an N+ Score of 57, resulting in an 'F' grade from Nutrienting, suggesting it is underdosed for many common applications. While the 400 IU dosage is considered clinically effective for basic maintenance in some populations, many health organizations recommend higher daily intakes for optimal Vitamin D status. The product contains a single ingredient with 100% label transparency. It may be suitable for individuals seeking a minimal daily Vitamin D intake or those with specific dietary restrictions.
About This Product
Vitamin D-3 400 IU by Source Naturals is a vitamins & minerals supplement containing 1 active ingredients. It has earned an N+ Score of 57/100 (Grade F).
Notable clinical-dose ingredients include Vitamin D3.
N+ Score Breakdown
Are key ingredients present at clinically effective doses based on research?
Does the product include all expected ingredients for its supplement category?
Are individual ingredient amounts clearly disclosed without proprietary blends?
Does the formula include a breadth of beneficial compounds from multiple pathways?
Strengths
- +Fully transparent label with individual ingredient amounts disclosed
- +1 ingredient(s) at clinical dose levels
Weaknesses
- −Limited ingredient diversity compared to category norms
Ingredient Analysis (1 ingredients)
| Ingredient | Amount | Dose Adequacy |
|---|---|---|
| Vitamin D3 | 400.000 IU | Adequate |
Clinical ranges based on NIH ODS Fact Sheets and peer-reviewed research. Status indicates whether the amount meets evidence-based thresholds.