Sure, Vitamin K is a blood thinner In the body vitamin K2-7 is converted to K2-4 which is not a blood thinner. Vitamin K2-7 can cause arrythmias which you don't need. Vitamin k2-4 does not cause arrythmias or thin the blood. Source naturals has a nice sublingual K2-4 menaquinone-4. Many supplements have both K2-7 and K2-4. K2-4 is said to stay in your system for four hours. I want it in the serum whenever I take calcium in order to avoid athersclerosis. The sublingual is (said to be) absorbed into the bloodstream quickly. Calcium is said to be absorbed primarily two hours after intake. So I use the under the tongue two hours after taking calcium.
Loss of estrogen affects the way we absorb calcium and the way it is used by the body. You need to be low estrogen, so you need another way to address the osteoporosis.
I don't have any estrogen either. Age has deprived me of all that chaos. My secret weapon is Forteo. I sound like a car salesman when I talk about it, so I'll spare you.
My private opinion is that we can't regain the bone lost to osteoporosis through diet and exercise. And, the supplements are not natural.
Thee are other opinions, though, hopefully forthcoming. There is alot of talk about strontium, which I think binds to the same sites as calcium and is heavier than calcium.
I'm not sure how or if it depend on k2 or D3.
There is a good link about how calcium channel blockers don't effect the bones. I'll find it and send. Best wishes