My friend is hbv carrier and on tdf for one year.dna undetectable now.all other tsts normal.no fatigue or any symptoms other wise.his vit d was low,so he started taking vit D 2 month ago.and now in normal range..then he statred vit k2 with it 2 days ago.after 5 mins of taking vit k2 he feels that his body temp is rising along with shivering which becomes normal after half hour.he takes vit D and K2 at same time.what can be the reason?