I to Have DPU.   Have been through the whole gambit of medications to no real avail.  Prednasone is the only thing that removes my symptoms.    Between 40- 60 mg daily seems to be the dosage that relieves my symptoms.   I am 68 years old.   I have told my Doctors that the quaility of my life now is more important than the quanity.  That means for now a prolonged use of Prednasone.  I've read all the drug company disclaimers about the use of Prednasone.  I'm looking for the actual clinical studies for the use of the drug. I want to make as informed decision as possible.  Can  anyone help?  Thanks