The present invention provides a composition, wherein the composition contains ferrous amino acid chelate particles sintered by ferrous amino acid chelate, and the average value of the ferrous amino acid chelate particles is The particle size ranges from 500 nm to 2600 nm, and the average molecular weight ranges from 1,500 Daltons (Dalton) to 600,000 Daltons. In addition, the composition of the present invention can be used to prepare a pharmaceutical product for treating or improving pancreatic related diseases, wherein the pharmaceutical product contains an effective dose of the composition and a pharmaceutically acceptable carrier.本發明提供一種組合物,其中該組合物中含有由亞鐵胺基酸螯合物燒結而成之亞鐵胺基酸螯合物粒子,且所述亞鐵胺基酸螯合物粒子之平均粒徑為500奈米至2600奈米、平均分子量為1,500道爾頓(Dalton)至600,000道爾頓。且本發明之組合物可用於製備治療或改善胰臟相關疾病的醫藥品的用途,其中所述醫藥品含有有效劑量之所述組合物以及藥學上可接受的載劑。