In particular, (i) an insulin compound at a concentration of 500 to 1000 U / ml, (ii) ionic zinc, and (iii) a log K for zinc ion binding of 1 mM or more selected from species having a range of 4.5 to 12.3 at 25 ° C An aqueous liquid pharmaceutical formulation comprising a concentration of zinc-binding species, and (iv) a nonionic surfactant; wherein the formulation has an EDTA and any other zinc-binding species having a log K for zinc ion binding greater than 12.3 at 25 ° C An aqueous liquid pharmaceutical formulation is provided that is substantially free of. [Selection figure] None特に、(i)500~1000U/mlの濃度のインスリン化合物、(ii)イオン性亜鉛、(iii)亜鉛イオン結合に関するlogKが25℃で4.5~12.3の範囲である種から選択される1mM以上の濃度の亜鉛結合種、及び(iv)非イオン性界面活性剤を含む水性液体医薬製剤であって;該製剤がEDTA及び亜鉛イオン結合に関するlogKが25℃で12.3を上回る任意の他の亜鉛結合種を実質的に含まない、水性液体医薬製剤が提供される。【選択図】なし