Vitamin D-3 400
GNC Vitamin D-3 400 is a single-ingredient vitamin supplement providing 400 IU of Vitamin D per serving. This dosage is considered to be at a clinically studied level. The product has an N+ Score of 57, earning it an 'F' grade, indicating a lower overall quality assessment. While it provides a clinically relevant dose of Vitamin D, its simplicity means it doesn't offer a broad spectrum of nutrients. This product may be suitable for individuals seeking a basic, single-ingredient Vitamin D supplement to support bone health and immune function, as research suggests Vitamin D plays a role in these areas.
About This Product
Vitamin D-3 400 by GNC 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 D.
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 D | 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.