The invention relates to a
desloratadine patch and a preparation method thereof. The
desloratadine patch comprises a patch film and medicament components on the patch film, wherein the medicament components comprise main component
desloratadine and auxiliary materials; and the auxiliary materials comprise a solubilizing agent, a substrate, a cross-linking agent, an
excipient and an
osmosis reinforcing agent. The invention overcomes the bias that in the prior art, the desloratadine is considered to be difficult to externally penetrate through the
skin cuticle and not to reach effective tissue concentration in the
skin tissue so as not to exert the curative effects of allergic resistance and
inflammation resistance, solves the problem of poor
solubility of the desloratadine, improves the permeability of the desloratadine on the
skin cuticle, ensures that the desloratadine rapidly arrives at the affected part and takes the effect rapidly and solves the problems of inconspicuous effect-taking and obvious
first pass effect on
gastrointestinal tract of the traditional patch. The desloratadine patch has the advantages of good
curative effect, rapid action, less toxic or
side effect and convenient use.