Comparison
Basic Preventive 4 (Iron and Copper Free) and Basic Preventive 5 (Iron Free)
Basic Preventive 4 (Iron and Copper Free) (Douglas Laboratories) lists 28 distinct ingredients and Basic Preventive 5 (Iron Free) (Douglas Laboratories) 29 (rows of one ingredient counted once); 28 are on both labels. On the site's similarity measure, which compares ingredient lists (1 for the same list, rarer ingredients counting for more; amounts are not part of it), the two formulas score 0.96.
| Ingredient | Basic Preventive 4 (Iron and Copper Free) | Basic Preventive 5 (Iron Free) |
|---|---|---|
| Vitamin C | 1,200 mg (1333%) | 535 mg (594%) |
| Calcium | 500 mg (38%) | 220 mg (17%) |
| Vitamin B6 | 50 mg (2941%) | 22 mg (1294%) |
| Vitamin D | 2.5 mcg (13%) | 1.1 mcg (6%) |
| Magnesium | 500 mg (119%) | 220 mg (52%) |
| Vitamin B12 | 100 mcg (4167%) | 44 mcg (1833%) |
| Zinc | 20 mg (182%) | 9 mg (82%) |
| Niacin | 200 mg (1250%) | 85 mg (531%) |
| Vitamin E | 268 mg (1787%) | 119 mg (793%) |
| Potassium | 99 mg (2%) | 44 mg (under 1%) |
| Folate | 1,333 mcg DFE (333%) | 592 mcg DFE (148%) |
| Vitamin A | 7.5 mg | 3.33 mg |
| Pantothenic Acid (Vitamin B5) | 400 mg (8000%) | 178 mg (3560%) |
| Riboflavin | 50 mg (3846%) | 20 mg (1538%) |
| Thiamin | 100 mg (8333%) | 44 mg (3667%) |
| Biotin | 300 mcg (1000%) | 133 mcg (443%) |
| Chromium | 200 mcg (571%) | 85 mcg (243%) |
| Selenium | 200 mcg (364%) | 90 mcg (164%) |
| Manganese | 20 mg (870%) | 9 mg (391%) |
| Iodine | 150 mcg (100%) | 70 mcg (47%) |
| Choline | 150 mg (27%) | 65 mg (12%) |
| Vitamin K | 60 mcg (50%) | 27 mcg (23%) |
| Molybdenum | 150 mcg (333%) | 65 mcg (144%) |
| Inositol | 50 mg | 22 mg |
| Boron | 2 mg | 0.9 mg |
| Flavonoid | 100 mg | 44 mg |
| Vanadium | 39 mcg | 18 mcg |
| PABA | 50 mg | 20 mg |
| Copper | 0.8 mg (89%) |
Amounts are per serving as DSLD gives them: Basic Preventive 4 (Iron and Copper Free), 6 tablets; Basic Preventive 5 (Iron Free), 4 vegetarian capsules. Current labels entered August 2020 and February 2021. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- Basic Preventive 4 (Iron and Copper Free)Douglas Laboratories: every row against all products listing it
- Basic Preventive 5 (Iron Free)Douglas Laboratories: every row against all products listing it