FishFright
More wheels than sense
If his doctor is NOT prescribing K2 as well then Dave should go back and ask why not, given the wealth of research suggesting it to be necessary! (Unless one happens to eat a K2-rich diet which very few people do these days due to changes in farming practices.)
And if the doctor doesn't know the difference between vitamins K1 and K2, find one who does!
Which of those papers suggest it's necessary for absorption ? They all seem to only talk about using it in conjunction with Vit D for osteoporosis and other bone density issues ?