I get nosebleeds if I skip Vit K for a while. Since I only take it twice a week, it is easy to miss. If he's not already on it, you might ask the doc about it next clinic if nosebleeds continue. On a side note, my 4-year=old who does not have CF gets nose bleeds from picking his nose. <img src="i/expressions/face-icon-small-wink.gif" border="0">