The invention relates to the film products and methods of their
preparation that demonstrate a non-self-aggregating uniform
heterogeneity. Desirably, the films disintegrate in water and may be
formed by a controlled drying process, or other process that maintains
the required uniformity of the film. The films contain a polymer
component, which includes polyethylene oxide optionally blended with
hydrophilic cellulosic polymers. Desirably, the films also contain a
pharmaceutical and/or cosmetic active agent with no more than a 10%
variance of the active agent pharmaceutical and/or cosmetic active agent
per unit area of the film.