I do not think the insurance company can support such at this time. I'm sorry you are in such bad pain. I don't think the Glucosamine works so well in joints other than knee; I know I've tried it in the past and it was too expensive for not working very well for me to take (and I wasn't in the mood to take those expensive, horse-size pills so often, it seemed like it was too much to be doing for so little, if I had to go to that expense/effort, I wanted it to work better). Are you sure it really helps you/is worth it, you've been taking it for several months and can really tell a difference? I think there is less expensive, better pain meds these days by prescription.
Glucosamine: Evidence - MayoClinic.com