Parathyroid hormone (PTH) is a well known anabolic drug and has been used to treat osteoporosis in post-menopausal women with great effect. A continuous high level of PTH decreases bone density and induces hypercalcemia, but if given once daily PTH has an anabolic effect on bone. It is being investigated if it is possible to use PTH in the treatment of other conditions, for example in the treatment of bone fractures.