What Causes Degenerative Disc Disease While On Tizanidine?

I am now in pain management. Dr put me on tizanidine 3x s daily. I have had 2 sets of injections in lumbar area and that might be better. I have arthritis and degernaitive disc disease from my neck to end of spine with a bulge in the lumbar section. I am trying really hard not to try anything stronger but I have been in constant pain and the middle of my back kills me if I do the simplest task at home. I spend a lot of my days on ice packs but wake up hurting. Does cyclobenzaprine work better? We are testing different medications to see if they work. I was on Soma but he doesn t want to give me that and I am not asking for it but I have to get some relief. I want my life back. I have always been active but this treatment is not working for me.