The present invention is related to a method for cancer treatment comprising a step of administering to a subject in need thereof a therapeutically effective amount of a pharmaceutical composition comprising ferrous amino acid chelate and a pharmaceutically acceptable carrier. By means of amino acid chelating to ferrous and maintaining chelating state through the stomach, the pharmaceutical composition in accordance with the present invention would not cause any weight variation, and is suitable for inhibiting or treating cancer.本發明提供一種含有亞鐵胺基酸螯合物之組合物用於製造抗癌症之醫藥品的用途，其中醫藥品包含有效抗癌症劑量之含有亞鐵胺基酸螯合物之組合物以及其藥學上可接受的載劑。本發明所述之含有亞鐵胺基酸螯合物之組合物中，胺基酸可與亞鐵維持螯合狀態通過胃，且不影響受體之體重變化；由含有亞鐵胺基酸螯合物之組合物製造而得之醫藥品具有抑制或治療癌症之效果。
