Menaquinone-4 (MK-4)
Menaquinone-4 (MK-4) is a unrated form of Vitamin K, used in 9 on-market products .
9
on-market products
unrated
quality tier
n/a
elemental fraction
Why this tier: Used at pharmacological doses (45 mg/day, as menatetrenone) for osteoporosis in Japan; at nutritional doses (420 mcg) MK-4 was not detectable in serum in a head-to-head test against MK-7, so its serum bioavailability appears far lower than MK-7.
Source: Sato T, Schurgers LJ, Uenishi K. 2012, Nutr J 11:93, PMID 23140417
Trend
Brands using this form
| Brand | Products |
|---|---|
| Xtendlife | 3 |
| Mason Natural | 2 |
| New Sun | 1 |
| Paradise Earth's Blend | 1 |
| Rite Aid Pharmacy | 1 |
| Superior Source | 1 |