I think it is hard to predict which meds are going to effect who how,in saying this when I went on the methadone from oxy-c I was warned that I would be lethargic to the point of semi-comatose. Now at higher dosed in the begining I was,fell asleep washing dishes,standing at the sink with my hands in the water for 20 minutes my kids said,never fell over,dropped the dish just woke up 20 minutes later and picked up where I left off!! I decided maybe I should try to titrate that dose a bit and did and have never had that happen again.
I cant take Morphine of any kind and sleep the sleep. Oxy depends on how much and how often and hydro,well lets just say I go like the energizer bunny for some reason and now some might think that is a good thing but when I stopped I was exhausted and in horrific pain so the methadone works the best and its cheap cheap cheap.
I think you will probably have to just kinda play the odds here and hope you get one that works for you and allows you to not get foggy but even that there are alternatives to help with the fog but that means taking another pill altogether and some of us take enough that we dont want have to take one more to counteract the effects of another.
I would be sure the Doc and I are on the same page and that they unerstand this is a trial run and you want to have the option to go back or try some other things.
At least you will have your homework done and at least know the outcome your hoping to acheive. Good luck!!
Disabled since 1999 from knee injury
DX: Bil knee meniscus removal with LTKR in 01. 6 knee arthroscopy for plica removal meniscus repair. Ank spondyl,ddd at L3-4 S1. disc collapse at L-3 with nerve impengement. legally deaf,copd,rt shoulder rotator cuff tear repair 06. some memory deficit post encephalitis,GERD