Ferric pyrophosphate containing mixed powder which comprises ferric pyrophosphate and sodium, in which (1) a content of ferric pyrophosphate is 95 wt% or more, and (2) a molar ratio of (Fe+Na)/P is 0.8-1.0.本發明之課題在提供一種含有焦磷酸鐵之粉末,其作為經口用鐵劑之主成分可獲得高鐵質吸收性。解決手段是有關於一種含有焦磷酸鐵之複合粉末,該粉末乃含有焦磷酸鐵及鈉成分,且特徵在於:(1)焦磷酸鐵之含量為95重量%以上;(2)(Fe+Na)/P莫耳比為0.8~1.0。