< Topic >The bone which presently is used roughly the preventive of the pore symptom or remedy medicine, the synthetic hormone formulation is a side effect, takes in as the food and drink, there is a difficult point. Unlike the former formulation, the side effect is little, daily by the fact that bone absorption rise is controlled by taking in simply as the food and drink, the bone roughly designates that the medicine, the medical supply and the eating and drinking item which are effective to the prevention and improvement of the pore symptom are offered as purpose. SolutionsThis invention the bone which designates the water soluble fraction of the kudzu as the active ingredient roughly is pore symptom prevention or the remedy medicine, in addition, the medical supply which contains this, is the eating and drinking item.【課題】現在使用されている骨粗鬆症の予防または治療剤、合成ホルモン製剤は副作用があり、飲食物として摂取するには難点がある。従来の製剤と異なり、副作用が少なく、日常的に飲食物として簡単に摂取することにより骨吸収上昇を抑制することで、骨粗鬆症の予防や改善に有効な薬剤、医薬品、飲食品を提供することを目的とする。【解決手段】本発明は、クズの水溶性画分を有効成分とする骨粗鬆症予防または治療剤であり、また、これを含有する医薬品、飲食品である。