My husband slipped on water and fell on the floor on his back. Since then he had been suffering from severe low back pain and consulted a doctor & took pain relief injection, antibiotics and pain killers with volini spray for 3 days. Though he is able to walk slowly and sit straight, he is still in lot of pain, unable to sleep, not able to get up from bed or toss on both the sides. He also feels constipated now. Dr. Has prescribed myospaz & dulcolax. Please suggest a proper medication to help him get relieved from back pain and constipation.