Comparison
B-12 Intrinsic Factor and Intrinsi B12-Folate
B-12 Intrinsic Factor (Progressive Professional from Progressive Laboratories) lists 4 distinct ingredients and Intrinsi B12-Folate (Metagenics) 3 (rows of one ingredient counted once); 3 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 0.85.
| Ingredient | B-12 Intrinsic Factor | Intrinsi B12-Folate |
|---|---|---|
| Vitamin B12 | 500 mcg (20833%) | 500 mcg (20833%) |
| Folate | 800 mcg | 1,330 mcg DFE (333%) |
| Intrinsic Factor | 20 mg | 20 mg |
| Biotin | 300 mcg (1000%) |
Amounts are per serving as DSLD gives them: B-12 Intrinsic Factor, 1 capsule; Intrinsi B12-Folate, 1 tablet. Current labels entered April 2022 and August 2023. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- B-12 Intrinsic FactorProgressive Professional from Progressive Laboratories: every row against all products listing it
- Intrinsi B12-FolateMetagenics: every row against all products listing it