Patent ID: 7025983

Claim:
A method for preparing a physiologically compatible film, said method comprising: mixing water soluble polymer and at least one stabilizing agent selected from the group consisting of xanthan gum, locust bean gum, carrageenan, guar gum and mixtures thereof to provide a film-forming mixture; dissolving water-soluble ingredients in water to provide an electrolyte containing aqueous solution; combining said film-forming mixture and said aqueous solution to provide a hydrated polymer gel; mixing oils to form an oil mixture that comprises at least two essential oils selected from the group consisting of thymol, methyl salicylate, eucalyptol, and menthol wherein the total amount of said oils in said oil mixture is at least about 5 wt % of the total weight of ingredients; adding said oil mixture to said hydrated polymer gel and mixing to provide a uniform gel; casting the uniform gel on a substrate; and drying the cast gel to provide said film that adheres to and dissolves in a consumer's mouth.