An object of the present invention is to provide a film-form preparation to be used in desensitization therapy and a method for producing the same. This film-form preparation enables the patient to self-administer an allergen and adjust the dose, has excellent portability, has no residual sensation, provides excellent protection against accidental swallowing, is easy for a caregiver to administer, and can greatly improve the QOL of both patients and caregivers. Additionally, this film-form preparation enables arbitrary control of the dissolution time in the mouth, particularly sublingually and has very little gummy sensation in the mouth and better feeling when touched by the fingers. A film-form preparation including: an allergen； an edible polymer that is soluble in both water and a polar organic solvent； and one or two or more types of particles selected from the group consisting of monosaccharide to hexasaccharide sugars and sugar alcohols thereof that have an average particle size of 0.1 to 100 µm.
