PROBLEM TO BE SOLVED: To provide means effective in the prevention or treatment of anemia, specifically iron deficiency anemia.SOLUTION: Disclosed is a pharmaceutical composition for enhancing the anemia prevention or treatment effects for infants in mammalian milk, the composition having as an active ingredient a bacteria belonging to the genus Bifidobacterium.【課題】貧血、特に鉄欠乏性貧血の予防又は治療に効果的な手段の提供。【解決手段】ビフィドバクテリウム属に属する細菌を有効成分とする、哺乳動物の乳における乳幼児用の貧血の予防又は治療作用を高めるための医薬組成物。【選択図】図1