hi i am currently taking 30 mg opana er x2 a day every 12 hrs and 4 10 mg opana for breakthrough. my pmp is changing me to exalgo 2 12 mg every 24 hrs with opana 10 for breakthrough, the previous dosage was poorly controlled but she wouldn't increase and seemed ok with 6-7 average pain no ok. how do you feel this new dosage will work out with the back problems, 2 failed back surgeries now l4,l4,s1 fused with hardware back, leg pain down both legs and neuropathy mid calf down