Just a bit more info I found (by no means the whole picture <img src="i/expressions/face-icon-small-wink.gif" border="0"> ). It said that typically, cfers with cfrd only take fast acting insulin, because (someone correct me if I'm remebering this wrong) the insulin is produced, but takes longer to get to where it needs to be. So, your blood sugar might be high 2 hrs after, but normal before meals...So if you took both a long acting and fast acting insulin, you would probably have a bout of hypoglycimia (low blood sugar) before meals...therefore, the fast acting insulin is used the most often...Does that make sense?