The present invention provides a compact drug feeder, which uses a container capable of limiting width or height of drug, and has a broader shared range for various shapes or sizes of drugs, with easy adjustment operation for all kinds of drugs.A width limiting member 34, which expands or reduces the spacing width Wi on a periphery portion 22, is opposed to an export mechanism 39, which is used for exporting the drug to outside of a container 29 at a speed higher than that of the periphery portion 22. Based on the width Ws of a measured object 50 received in a measured chamber 25, a spacing Wo between the width limiting member 34 and the export mechanism 39 is changed. Based on the height of the measured object 50, the height of the drug loaded on a periphery portion 22 is limited by a height limiting member 43.本發明係實現一種小型的藥劑饋送器,其係使用可限制藥劑之寬度或高度的容器,對於各種形狀或尺寸之藥劑的共用範圍較廣且可容易進行適合各種藥劑之調整作業。以與導出機構39相對向之方式設置寬度限制構件34,依據收容在量尺寸室25之量尺寸對象50的寬度Ws來變更寬度限制構件34與導出機構39之間隔Wo,並且依據該量尺寸對象50之高度,以高度限制構件43來限制載置在周緣部22上之藥劑的高度,而前述寬度限制構件34係用以擴大縮小周緣部22之上之空隙寬度Wi者,前述導出機構39係以比周緣部22更高速之速度將藥劑導出至容器29之外部。