The short answer · Bone turnover markers
Take vitamin k2 (menaquinone-7, mk-7) for bone turnover markers. This is the one to buy.
California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules
4.8· 37,256 ratings· $0.08/serving
Vitamin K2 (Menaquinone-7, MK-7) 120 mcg — inside the studied 90-360 mcg window
Of 2,848 products scored for Bone turnover markers, California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules ranks #1 with a DoseRank score of 86. Vitamin K2 (Menaquinone-7, MK-7) is the strongest evidence signal for this outcome.
Retailer links may be affiliate links. Rankings and placement are never paid.
The form“Why Vitamin K2 (Menaquinone-7, MK-7) — not Vitamin K2 (Menaquinone-4, MK-4) or Vitamin K1 (Phylloquinone)?”Evidence Strong evidence
Vitamin K2 (Menaquinone-7, MK-7) is the strongest evidence signal for this outcome.
- Vitamin K2 (Menaquinone-7, MK-7)The pick
Strong evidence · 120 mcg
Long-chain (MK-7) form of vitamin K2 with a notably longer half-life than MK-4; helps direct calcium into bone and away from arteries.
- Vitamin K2 (Menaquinone-4, MK-4)
Strong evidence · 900 mcg (calculated)
Short-chain menaquinone (MK-4) made in animal tissues; rapidly absorbed but short-acting, so it is dosed multiple times daily to activate osteocalcin and matrix Gla protein.
- Vitamin K1 (Phylloquinone)
Strong evidence · 1000 mcg
The main dietary form of vitamin K, abundant in leafy greens; central to liver-based clotting-factor synthesis, with weaker bone and cardiovascular evidence than K2 forms.
The dose“Is the dose actually effective?”Dose fit 69
Vitamin K2 (Menaquinone-7, MK-7) at 120 mcg lands inside the studied 90-360 mcg window.
Vitamin K2 (Menaquinone-7, MK-7)
Studied window 90-360 mcg · this pick 120 mcg
The ranking“Why should I trust this pick?”Trust 95
Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.
- 2,848 products scored
- Never paid placement
- Evidence level: Strong · 92
- 283 brands
- 13 ingredients
The price“Can I do better than $0.08 a serving?”Value 87
$0.08 per serving — low price tier for this outcome. The cheapest ranked pick here is $0.07 per serving.
- 2Nutricost, Vitamin K2 MK-7, 100 mcg, 240 SoftgelsScore 86 · $0.07/servingiHerb
Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.
Ready?
The #1 pick is $0.08 a serving.California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules — in stock at a tracked retailer.
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California Gold Nutrition, Vitamin D3 + K2 as MK-7, 180 Veggie Capsules ranks #1 for Bone turnover markers with a DoseRank score of 86. The score blends clinical strength, evidence, dose fit, trust signals and value across 2,848 products scored for this outcome.
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