I’ve been on Buprenorphine SL, .5 mg for the past year with excellent results. I had some issues with coverage from the Pharmacy initially, but got that cleared up. I recently retired and now have Medicare, medigap and Part D coverage.
I had to go through an appeal process because of it’s off license use for RLS( even though they cover Gabapentin and Lyrica which is also not licensed for RLS). As it is a tier 3 drug it falls under the deductible, which in my area is $545/ year! Since a 30 day supply last for 4 months as I only take a 1/4 tablet a day, I probably will not ever meet that deductible. I can get a 30 tablet prescription for it for less than $15 a month using Clever Rx which is better than the best Part D plan I could find in my location. Since you have to have a Part D, I am paying for a plan I currently don’t need and getting a better price without it! Go figure.
Fortunately, my pharmacy always has Buprenorphine under the Clever RX program.