Medicated Patch

Abstract

A medicated patch is provided which is covered with a liner that enables one to remove the liner unconsciously and readily without losing the initial stickiness of the medicated patch. The external medicated patch includes a backing, an aqueous adhesive drug-containing matrix that is spread substantially entirely over one surface of the backing, and a liner that is larger in size than the surface of the drug-containing matrix to which the liner is attached. The liner larger in size than the surface of the drug-containing matrix to which the liner is attached includes an unattached area that extends from the surface of the drug-containing matrix, or an unattached slack portion that projects upward from the surface of the drug-containing matrix at a position on the surface of the drug-containing matrix.

1 .- 3 . (canceled) 
     
     
         4 . An external medicated patch comprising: a backing unattached on one surface; an aqueous adhesive drug-containing matrix that is spread substantially entirely over one surface of the backing opposite the unattached surface of the backing, and an attached single-sheet liner that is larger in size than a surface of the drug-containing matrix to which the attached single-sheet liner is attached, wherein the attached single-sheet liner prior to peeling fully covers the surface of the drug-containing matrix and includes an unattached slack portion that projects upward from the surface of the drug-containing matrix at a position approximately two-thirds from one end of the medicated patch. 
     
     
         5 . (canceled) 
     
     
         6 . The external medicated patch according to  claim 4 , wherein the unattached slack portion that projects upward is provided so as to extend from the surface of the drug-containing matrix along the width of the surface of the drug-containing matrix. 
     
     
         7 . The external medicated patch according to  claim 4 , wherein the attached single-sheet liner has a thickness between 6 μm and 200 μm. 
     
     
         8 . The external medicated patch according to  claim 4 , wherein the drug-containing matrix comprises a water content between about 10% and about 80%. 
     
     
         9 . The external medicated patch according to  claim 8 , wherein the water content is between about 30% and about 80%. 
     
     
         10 . The external medicated patch according to  claim 4 , wherein the unattached slack portion projects upward from the surface of the drug-containing matrix between about 5 mm and about 20 mm. 
     
     
         11 . The external medicated patch according to  claim 10 , wherein the unattached slack portion projects upward from the surface of the drug-containing matrix between about 10 mm and about 15 mm.