The other day i went to the pain specialist that I have been seeing since March of this year. He gave me a prescription for 25mcg. and over the past 11 days I have been so tired, and have a real hard time concentrating on anything. This is a big problem because i inspect small ceramics with a magnifying glass for small errors. My wife is scared to let me drive because i have a hard time keeping my eyes open. The only problem is that the Fentanyl works great for the pain, with only break through pain at work that i dont take anything for. Does anyone know of anything that will help this well for the pain maybe something a little weaker so i dont get these side effects i kind of want an idea before i stop by to see him tomorrow. By the was my last med before the fentanyl was 5mg oxcodone 4 to 6 times a day it did not help with pain at all.