I will tell you why some people go off a doctor prescribed medication. Some doctors prescribe meds according to protocols as to age, weight, etc. While this is great according to the numbers, but everyone is different. And don't get me started on hospital systems that run on protocols when they have capable, intelligent staff whose hand are tied by protocols and are unable to tailer treatment to a 77 year old female in stead of the actual patient. Well, there you have my rant. Bottom line is the main concern and fear of law suits.