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Ingredient

Vitamin K2 (Menaquinone)

Promising

A fat-soluble vitamin involved in calcium handling and bone matrix proteins.

How it works

Activates vitamin K-dependent proteins including osteocalcin and matrix Gla-protein.

Evidence

Small to medium RCTs support a role in bone and arterial calcium handling.

Studies

Knapen et al., Osteoporos Int, 2013
MK-7 at 180 mcg/day improved markers of bone turnover in postmenopausal women.
PubMed 23525894 ↗

One ingredient, one study, one product worth your money.

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