The invention relates to a method for preventing the crystallization of a pharmaceutical in a polymer film in which the solvent- containing coating material applied for producing the polymer film comprising a matrix-forming polymer or polymer mixture and at least one pharmaceutical is at times dried at temperatures which are at least 10 �C above the melting temperature of the pharmaceutical present in the coating material. The maximum temperature is thus higher than necessary for straight forward drying and saves an additional time-consuming and costly operating step.
