It is completely understandable to feel frustrated, but please do not worry. Teriparatide (the medicine in Terifrac injection) works to rebuild bone strength and prevent future fractures; it is not a direct painkiller. Since your back pain has lasted six years, it is likely caused by chronic issues like joint wear-and-tear, muscle strain, or old spinal changes that this medication cannot directly cure.\n\nThe treatment is likely still working silently to protect your bones. Your next step should be to consult your doctor. They can investigate the exact cause of your chronic pain and suggest supportive treatments, like physical therapy or specific pain relief, alongside your osteoporosis therapy.