PROBLEM TO BE SOLVED: To provide an agent for promoting bone formation and inhibiting bone resorption, the agent having an effect of promoting bone formation and inhibiting bone resorption, and to provide foods and drinks, pharmaceutical products or feeds for promoting bone formation and inhibiting bone resorption.SOLUTION: The agent for promoting bone formation and inhibiting bone resorption contains one kind or more of cytochrome P-450, plasminogen, transferrin and plasmin, as an effective ingredient. Foods and drinks, pharmaceutical products or feeds for promoting bone formation and inhibiting bone resorption are provided, in which one kind or more of cytochrome P-450, plasminogen, transferrin and plasmin are compounded.COPYRIGHT: (C)2013,JPO&INPIT【課題】骨形成促進及び骨吸収抑制作用を有する骨形成促進及び骨吸収抑制剤、さらには、骨形成促進及び骨吸収抑制用飲食品、医薬品又は飼料の提供。【解決手段】チトクロームP-450、プラスミノーゲン、トランスフェリン及びプラスミンのいずれか1種以上を有効成分とする骨形成促進及び骨吸収抑制剤。また、チトクロームP-450、プラスミノーゲン、トランスフェリン及びプラスミンのいずれか1種以上を配合した骨形成促進及び骨吸収抑制用飲食品、医薬品又は飼料。【選択図】 なし