omegavia.com/how-to-choose You need both MK-4 and MK-7 (particularly MK-4)

chrismasterjohnphd.com/2016/12/09 The Ultimate Vitamin K2 Resource

Supplements

k-vitamins.com/index Koncentrated K

cureality.com/forum/topics Heart Health Forum >> Koncentrated K

Ordered some two weeks ago. Code typ#1 worked.

I always use lower case for the code, although I’m not sure that matters.

Vitamin K2 MK-7 Source heartlifetalk.com/forums

Vitamin K2 MK-7 Source - slimjohn post heartlifetalk.com/forums

Combination K supplements:

        Vitacost Ultra Vitamin K with Advanced K2 Complex
        Bronson Vitamin K Triple Play 
        Life Extension Super K with Advanced K2 Complex
        

I think that D3:VitA ratio should be roughly 3:1. At low dosages it might be difficult to achieve. If 2000IU D3 give 25-hydroxy vitamin D3 over 30-40ng/ml, then 10000IU VitA/WEEK may be good enough. In general get D3 level to 60-70ng, then add minimum VitA. My concern is that at higher dosages D3 and VitA protect each other from excessive amounts from toxicity and ratios near 1:1 might diminish effectiveness. The levels you mentioned are nowhere near toxicity levels so the 10kIU VitA per week should be good. If your children get VitA (retinol) in multivitamin and diet then this may be sufficient.