Suggest Alternative Medicine Of Hysingla For Back Pain With Bulging Disc

My husband has chronic back pain with bulging disc s. He has sever pain. The doctor wrote a script for him called hysingla. I can t find a pharmacy that carries it and our HMO won t pay for it anyway. We need to find out what medication basically does the same thing but has been on the market for a while and is most likely to be covered by most insurances. Thankyou