Honestly, I have tried various narcotics for stuff like wisdom tooth surgery and corrective surgery on my nose, and I never once got addicted to any one of them.

OxyContin was probably my favorite narcotic because it dulled the pain like it was supposed to, and it didn't make me wanna puke like Vicoprofen did. And actually, despite it being my "favorite," I still have some of it left over and I was never motivated to take more than needed. If anything, I would expect someone with bipolar to become addicted to something like stimulants if stimulants trigger mania in them. Or prednisone.