Posted 2/7/2007 10:51 AM (GMT -8)
For my son, it helped taking it at night for his asthma to help reduce his coughing fits and to open his airways so he can sleep better. For me and my allergies, it keeps the allergy symptoms at bay during the day. I've wondered about this myself and this is what my doc told me the last time I seen her. I'm sure there is a more complicated story for it and my doc just made it easier to understand :)