Leah: I'm glad that your boy is doing better. However, If in fact your ferret does have Insulinoma, which is very likely given the low blood glucose readings prior to treatment, then he will have to STAY on the prednisolone, or eventually get surgery. I am including links about insulinoma that you really need to read. It is a progressive disease that will only get worse over time. Unfortunately, it is common among ferrets. These two links are very important for all ferret owners to read and understand. The prednisolone does not cure the insulinoma, it only helps to manage it, and to do so it must be present in the bloodstream at all times. This means administering it at least twice, and preferably three times, a day. http://www.miamiferret.org/fhc/treatment.htm http://www.afip.org/ferrets/PDF/insulinoma.pdf Jeff In Memory of Neo Caring for Trinny, Morphy, Baby Girl, and Luna= [Posted in FML 5872]