| abstract |
A patch comprising a backing layer and an adhesive agent layer, wherein the adhesive agent layer comprises at least one drug selected from the group consisting of emedastine and its pharmaceutically acceptable salts, at least one adhesive agent selected from the group that It consists of rubber-based bonding agents and silicone-based bonding agents, and an alkali metal fumarate as a cohesion-enhancing agent for the bonding agent layer, where, when the bonding agent layer comprises a rubber based adhesive agent, the adhesive agent layer comprises a styrene based block copolymer or a mixture of a styrene based block copolymer with polyisobutylene as the adhesive agent, and further comprises liquid paraffin with a mass ratio between the liquid paraffin and the styrene-based block copolymer (a mass of the styrene-based block copolymer / a mass of the liquid paraffin) which is less than 1.5. |