Which Form?
Vitamin K2
3.0
Moderate
consensus
Available Forms
- MK-7 (menaquinone-7) is the most common supplemental form due to longer half-life
- Combined D3/K2 supplements are the most practical format
- Food sources include natto (highest K2 content), hard cheeses, egg yolks, and grass-fed butter
Dosage & Timing
Dosage
- 100-200mcg MK-7 daily is the commonly cited supplemental dose
- No expert specifies an exact K2 dosage in analyzed videos — Hyman and Johnson take it as part of a combined D3/K2 supplement
Timing
- Take with a fat-containing meal for absorption, same as vitamin D
- Morning or midday preferred
- Take alongside vitamin D3 for synergistic calcium metabolism
Expert Positions
What Each Expert Says
Huberman has zero mentions of vitamin K2 across his entire analyzed video library. Despite detailed coverage of vitamin D, magnesium, omega-3, creatine, and other supplements, K2 does not appear in any episode, AMA, or guest discussion. This absence is notable given the D3+K2 pairing recommended by Hyman, Patrick, and Johnson.
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