Vitamin K1 is generally the preferred form of vitamin K because it is less toxic, works faster, is stronger, and works better for certain conditions. SHOWING PROMISE Vitamin K2 appears to protect the bones more than Vitamin K1, but too little of either is bad for the bones. Studies have shown that poor Vitamin K intake is linked to low bone mass, osteoporosis and fracture risk. Women who consumed less than 109 mcg of Vitamin K per day were found…