Osteofos 70 is commonly used for low bone density and osteoporosis to reduce the risk of fractures by strengthening bones over time. These medicines are often prescribed for several years because bone improvement happens slowly. In many people, the benefits of preventing fractures are greater than the rare long-term risks, especially when bone density remains low or fracture risk is still high. You are correct that very long-term use of this type of medicine has been linked in rare cases to unusual thigh bone fractures or jaw problems. However, these complications are uncommon and usually related to prolonged treatment, individual risk factors, and overall bone health. Doctors often reassess bone density, fracture risk, calcium, and vitamin D levels after a few years to decide whether treatment should continue or be paused temporarily. Do not stop the medicine on your own. Inform your doctor if you develop thigh pain, jaw pain, or difficulty walking, as these symptoms may need evaluation.