Welcome Nancy, though I'm sorry you have to be here. I haven't heard of this drug being used, much less for RSD, though I'd be interested in finding out more about it. Have you tried any blocks? That's the best treatment for getting RSD into remission. You didn't mention if you had an upper or lower extremity affected, so I'm not sure what kind of block you'd need, but you ought to ask your doc about them.
Good luck, and if you find out more about that medication, please let us know.
Thanks,
Cathy