Adhesive patch for the transdermal administration of a medication

摘要

PCT No. PCT/IB94/00416 Sec. 371 Date Jul. 17, 1996 Sec. 102(e) Date Jul. 17, 1996 PCT Filed Dec. 13, 1994 PCT Pub. No. WO95/16439 PCT Pub. Date Jun. 22, 1995An adhesive patch for delayed onset transdermal drug delivery, comprising a reservoir or matrix containing the drug. An impervious membrane is arranged on said reservoir or matrix and designed to become pervious after a given delay period by receiving an external stimulus that alters its physical/chemical structure.