Basic Preventive 4 (Iron and Copper Free)
Douglas Laboratories Basic Preventive 4 (Iron and Copper Free) is a multi-vitamin and mineral supplement with a focus on comprehensive nutrient delivery without iron or copper. It features high levels of Vitamins C, E, Thiamine, and Niacin. This product has an N+ Score of 80.
About This Product
Basic Preventive 4 (Iron and Copper Free) by Douglas Laboratories is a collagen & beauty supplement containing 28 active ingredients. It has earned an N+ Score of 80/100 (Grade B).
This product features a fully transparent label with individual ingredient amounts disclosed, and key ingredients are present at clinically effective doses based on peer-reviewed research.
Notable clinical-dose ingredients include Thiamine, Riboflavin, Niacin and 16 more.
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
- +Key ingredients at clinically effective doses
- +Fully transparent label with individual ingredient amounts disclosed
- +Broad ingredient diversity exceeding category norms
- +19 ingredient(s) at clinical dose levels
- +Rich formula with 28 active ingredients
Weaknesses
- −Missing several expected ingredients for its category
Ingredient Analysis (28 ingredients)
| Ingredient | Amount | Dose Adequacy |
|---|---|---|
| Thiamine | 100.000 mg | Optimal |
| Riboflavin | 50.000 mg | Optimal |
| Niacin | 200.000 mg | High |
| Vitamin B6 | 50.000 mg | Optimal |
| Folate | 1333.000 mcg DFE | High |
| Vitamin B12 | 100.000 mcg | Optimal |
| Biotin | 300.000 mcg | Optimal |
| Pantothenic Acid | 400.000 mg | Optimal |
| Choline | 150.000 mg | Adequate |
| Vitamin A | 7500.000 mcg | High |
| Vitamin E | 268.000 mg | Optimal |
| Calcium | 500.000 mg | Optimal |
| Iodine | 150.000 mcg | Optimal |
| Zinc | 20.000 mg | Optimal |
| Selenium | 200.000 mcg | Optimal |
| Manganese | 20.000 mg | High |
| Chromium | 200.000 mcg | Optimal |
| Boron | 2.000 mg | N/A |
| Vitamin D3 | 2.500 mcg | Under |
| Molybdenum | 150.000 mcg | Optimal |
| Inositol | 50.000 mg | N/A |
| Para-Aminobenzoic Acid | 50.000 mg | N/A |
| Vanadium | 39.000 mcg | N/A |
| Vitamin K1 | 60.000 mcg | Adequate |
| Citrus Bioflavonoid Complex | 100.000 mg | N/A |
| Magnesium Complex | 500.000 mg | N/A |
| Potassium Complex | 99.000 mg | N/A |
| Vitamin C Complex | 1200.000 mg | N/A |
Clinical ranges based on NIH ODS Fact Sheets and peer-reviewed research. Status indicates whether the amount meets evidence-based thresholds.