The florinef is a medication that is metabolized slowly enough that it's effects last throughout the day. However, some people have problems with high blood pressures at certain times of the day, so the doctors divide the doses to try to fix the problem. Florinef is a medication not only used in CAH patients but also used commonly in adults with "hypotension" problems. This means these people have a problem maintaining normal blood pressure. Their's is too "low". The florinef helps stabilize it.