Hi Zelda..Hope the methadone is working out well and the joint pains are fading. Like I mentioned I've never been on Buprenorohine, et al...but now that I think about it..I too had uncomfortable joint stiffness, etc. when I was on a higher dose (about 125-130mgs) of methadone. I don't think there are any studies saying that methadone may cause this side-effect..have to check. And I don't want people to think this will happen to them if they take it..there is already so much mus-information out there about it...but it happened to me and at the time there was nothing else I was taking that could have caused it. I'm also one of a small percentage less than 3%..who swells badly at a high dose. When I come down to 70 ish..it goes down alot and the stiffness is pretty much gone. Actually the joint stiffness was gone at 80-85ish. They were bad though..I would try and sleep with both my arms up in the air..strange I know..but if I didn't I couldn't close my hands in the morning for about 20 minutes until whatever it was..went down.
Wanted to share that with you..we all react differently to methadone and all meds for that matter. Mostly I'd say 9 out of 10 people tolerate methadone very well. Hope this is the case for you
Take care
Sha