The short answer · Bone turnover markers
Take vitamin k2 (menaquinone-7, mk-7), vitamin k2 (menaquinone-4, mk-4) & vitamin k1 (phylloquinone) for bone turnover markers. This is the one to buy.
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Life Extension, Super K, 90 Softgels
4.8· 5,620 ratings· $0.23/serving
DoseRank score86
Vitamin K2 (Menaquinone-7, MK-7) 1360 mcg — higher than the studied 90-360 µg window
Of 3,425 products scored for Bone turnover markers, Life Extension, Super K, 90 Softgels ranks #1 with a DoseRank score of 86. Vitamin K2 (Menaquinone-7, MK-7) and Vitamin K2 (Menaquinone-4, MK-4) are the strongest evidence signals for this outcome.
The form“Why Vitamin K2 (Menaquinone-7, MK-7), Vitamin K2 (Menaquinone-4, MK-4) & Vitamin K1 (Phylloquinone)?”Evidence Strong evidence
Vitamin K2 (Menaquinone-7, MK-7) and Vitamin K2 (Menaquinone-4, MK-4) are the strongest evidence signals for this outcome.
- Vitamin K2 (Menaquinone-7, MK-7)The pick
Strong evidence · 1360 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)The pick
Strong evidence · 1000 mcg
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)The pick
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Life Extension, Super K, 90 Softgels 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 3,425 products scored for this outcome.
Vitamin K2 (Menaquinone-7, MK-7) and Vitamin K2 (Menaquinone-4, MK-4) are the strongest evidence signals for this outcome.
1 of 3 dosed ingredients land in the studied range. Vitamin K2 (Menaquinone-7, MK-7) at 1360 mcg is higher than the studied 90-360 µg window. DoseRank scores this product's dose fit at 96 out of 100.
Life Extension, Super K, 90 Softgels works out at $0.23 per serving. $0.23 per serving — mid price tier for this outcome. The cheapest ranked pick here is $0.07 per serving.
No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.
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