A non-sterile, non-active, electrical conductor that is fastened to a patient and connected to an iontophoresis system (e.g., typically the current generator), to create a circuit for the return of electrical current after its emission for the therapeutic transport of ions to the patient. It is fastened to the patient's body typically where the greatest effect can be achieved with respect to the active electrode. It will typically be designed with a detachable lead wire and comes in a variety of sizes. This is a single-use device.