Jarrow Formulas® MK-7 is made via fermentation by Bacillus subtilis subsp. natto. MK-7 (menaquinone-7) is the bioactive form of vitamin K2, traditionally found naturally occurring in Natto. MK-7 is ten times better absorbed than K1 from spinach* and is responsible for the carboxylation of specific bone proteins needed for building bones.* 
MK-7 Function:
Promotes Bone Health*
MK-7 Highlights:
Vitamin K2 as Menaquinone-7 Softgels
Superior form of vitamin K
Longer half-life than K1  (days vs. hours)  
Higher activity than  K1  (6X in vitro)
10X better absorbed than K1  from spinach
Promotes bone health*
90 mcg Per Serving
Critical to Blood Clotting & Coagulation*
No wheat, no gluten, no dairy, no egg, no fish/shellfish, no peanuts/tree nuts.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.