[yumraj]

Why K2? is there any relation between D3 and K2, or is that just something that you're taking?

Also, what dosage of D3 and K2 are you using for your kids?

[jdhn]

I believe K2 is taken along with D3 in order to prevent the calcium from hardening in your veins.

[_0ffh]

Yes, both soft tissue and vascular calcification. Typically you should supplement around 40ug of K2 (mk7 all-trans, these details seem to matter!) for every 1000IU of D3.