Posted by Reviewer3189619 on May 13, 2011 | Verified Purchase
I have osteoporosis and take calcium, vit D3 and magnesium to ensure the calcium is absorbed into my bones. Vit K2 was recommended to me by several members of the National Osteoporosis Foundation forum. The vit K2 works by stopping the calcium being deposited in arteries, which could lead to strokes and heart attacks. I have no way of knowing whether the tablets are working, but at least I am doing everything possible to beat this crippling disease. The service I received from iHerb has been very good. My tablets arrived in less than 2 weeks using airmail to the UK and I didn't have to pay customs duty on them.