Patent ID: 7031768

Claim:
A method of providing reliable dosage ratings for the administration of therapeutic agents in transdermal iontophoresis devices that include a reservoir for holding a therapeudic agent comprising steps of: (a) providing a commonly manufactured lot of galvanic battery power sources each power source including (i) an oxidizable species and a reducible species wherein said self-contained galvanic power source provides the sole source of both the power and control for dosage delivery and contains a lesser amount of a selected one of said oxidizable species and reducible species; (ii) a common conductor for carrying said oxidizable species and said reducible species; (b) determining by sample testing in accordance with lot size characteristics of said lot including an average charge capacity for said galvanic battery power sources of said lot to produce a tested lot; (c) incorporating a galvanic power source from said tested lot into each said device; (d) labeling a delivery dosage rating for said devices as verified by said average charge capacity of said tested lot.