I take the D cofactors with my 5,000 iU of D, and I also take a tbsp. of cod liver oil, when I remember. My bottle of vit. K from MK7 is 100 mcg. and label says to take no more than one a day. I took a few more today on the strength of the advice here.
Anyway, I have no idea if my D status was the reason for the cold I got. Again, I rarely get sick, including colds. I continue to feel the good effects of daily salt loading.