HOWEVER, NOT ALL VITAMIN K2 SUPPLEMENTS ARE THE SAME....
Many K2 products that you will find at your local big box store are made with a cheap, ineffective form of Vitamin K2 known as MK-4 (menatetrenon-4). Research has shown that the MK-4 form of Vitamin K2 is poorly absorbed by your body, lasting only 8 hours in your bloodstream .
With the cheap form of K2 (labeled as "MK-4"), you might as well be throwing your money away...
The best type of K2 is the MK-7 form (menaquinone-7), which is absorbed more slowly by your body (it lasts 72+ hours in your bloodstream). This long release allows you to get the most benefit out of your K2 supplement.
The best supplier of the MK-7 form of Vitamin K2 is NattoPharma, the worldwide leader in Vitamin K2 research and development. After years of research, the team at NattoPharma created MenaQ7®, the most researched and proven form of Vitamin K2.
A landmark 2013 double-blind, placebo controlled study of 244 healthy post-menopausal women showed that supplementing daily with 180mcg MenaQ7® improved bone mineral density and strength as compared to the placebo group .
MenaQ7® has been clinically tested and proven to support stronger bones.