Top pick · DoseRank
Why this ranks #1 for bone turnover markers
#1
Life Extension, Super K, 90 Softgels
Life Extension$0.23 / serving4.8 · 5,573Available now
Why this ranks here
- Evidence fitVitamin K2 (Menaquinone-7, MK-7) and Vitamin K2 (Menaquinone-4, MK-4) are the strongest evidence signals for this outcome.
- Dose fit1 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.
- Price / serving$0.23 per serving — mid price tier for this outcome.
- AvailabilityIn stock across major retailers; 99% availability confidence.
- TrustStrong trust signals — consistently high marks from verified buyer ratings.
Trade-offs
Value for money trails the rest of this listPopularity trails the other picks here
The numbers
86
89
96
71
1360 mcgAbove rangehigher than the studied 90-360 µg window
1000 mcgAbove rangehigher than the studied 1.5-45 mg window
2000 mcgIn rangeinside the studied 500-5000 µg window