The present invention relates to an iontophoretic patch. The iontophoretic patch (10) includes a donor gel (30) and a reference gel (34) that output an electric current from a current supply apparatus (14), to an external conductor, for example, a skin of a patient, by being disposed in contact with the external conductor. The iontophoretic patch (10) includes a donor part (16) having the donor gel (30) with a medication to be injected into the external conductor being contained therein, a reference part (18) having the reference gel (34) and which is disposed on the external conductor separately away from the donor part (16), the current supply apparatus (14) being mounted on a surface of the reference part (18) that is opposite to the reference gel (34), and an electrode film (20) for supplying the electric current from the current supply apparatus (14) to the donor gel (30) and the reference gel (34).本發明,係有關於離子電滲用貼片,離子電滲用貼片(10),係具備有:藉由與外部導體、例如患者之皮膚作接觸配置,而將從通電裝置(14)而來之電流輸出至前述外部導體處的供體用凝膠(30)以及參考用凝膠(34)。此離子電滲用貼片(10),係具備有:供體部分(16),係具有供體用凝膠(30),並在供體用凝膠(30)中含有浸透至前述外部導體中之藥劑;和參考部分(18),係具有參考用凝膠(34),並在與該參考用凝膠(34)相反側的表面上,被載置有前述通電裝置(14),並且在前述外部導體處而被與供體部分(16)作分離配置;和電極薄膜(20),係將從通電裝置(14)而來之電流供給至供體用凝膠(30)以及參考用凝膠(34)處。10...離子電滲用貼片12...離子性藥劑透過裝置14...通電裝置14a、14b...連接孔16...供體部份18...參考部分20...電極薄膜26...橋接部分28...供體用貼附構件30...供體用凝膠32...參考用貼附構件34...參考用凝膠36...覆蓋層50a、52a...突出部54...絕緣薄膜56...電池58...絕緣薄片