An electrotransport agent delivery device for delivering a therapeutic agent through a body surface, and a method for increasing agent delivery efficiency, is provided. The device includes a current controller which delivers a pulsating electrotransport current and peak current density I.sub.max, I.sub.max...http://www.google.ca/patents/US5983130?utm_source=gb-gplus-sharePatent US5983130 - Electrotransport agent delivery method and apparatus