Comparison
K2 MK-4 500 mcg and K-2 500 mcg MK-4
K2 MK-4 500 mcg (Rite Aid Pharmacy) lists 2 distinct ingredients and K-2 500 mcg MK-4 (Superior Source) 2 (rows of one ingredient counted once); 2 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 1.00: the same ingredients, at the amounts in the table below.
| Ingredient | K2 MK-4 500 mcg | K-2 500 mcg MK-4 |
|---|---|---|
| Vitamin K | 500 mcg (417%) | 500 mcg (417%) |
| Stevia | 1 mg | 1 mg |
Amounts are per serving as DSLD gives them: K2 MK-4 500 mcg, 1 micro quick absorb tablet; K-2 500 mcg MK-4, 1 microlingual(r) tablet. Current labels entered January 2025 and December 2014. Percentages of the Daily Value from 21 CFR 101.9. Source: NIH ODS Dietary Supplement Label Database.
Each product on its own
- K2 MK-4 500 mcgRite Aid Pharmacy: every row against all products listing it
- K-2 500 mcg MK-4Superior Source: every row against all products listing it