sis,
i don't know about it, but i do know that there is pain management w/out pain meds. hopefully this is what the doc referred your husband to.
he has pain, and that is where this all started (i think). but, he crossed a line into abuse and i wonder if he has plans to address the things inside of him that led him to like being high, and therefore abuse the drugs. this kind of drug addiction i don't know about, but i'm wondering what he is going to do for himself - other than the pain clinic - so that he feels hopeful and gets some tools to deal.
you, young lady, are going to be just fine.