Being the method of prescribing parathyroid hormone, namely PTH orally, including PTH of the effective quantity and the fact that it prescribes karushitonin of the effective quantity also orally in the patient who needs PTH, the method of becoming. As for method of this invention, there is no side effect of the high calcium blood symptom, the high calcium urine symptom or the kidney calculus symptom, the oral administration of PTH is made possible.副甲状腺ホルモン、すなわちPTHを経口投与する方法であって、PTHを必要とする患者に、有効量のPTHおよび有効量のカルシトニンを経口的に共投与することを含んでなる方法。本発明の方法は、高カルシウム血症、高カルシウム尿症および腎結石症の副作用のない、PTHの経口投与を可能にする。