The invention relates to the technical field of oral membranes, in particular to a multilayer oral membrane and a preparation method thereof. The invention provides an oral
membrane composition, which comprises semeglutide and pharmaceutically acceptable auxiliary materials, and is characterized in that the composition is formed by combining a
drug-containing
biological adhesion layer and a backing layer, and the backing layer mainly comprises a membrane forming material, a
solvent and a
plasticizer; the
drug-containing
biological adhesion layer mainly comprises semeglutide, a film-forming material, an
adhesive, a pH
regulator, a flavoring agent and a
solvent. By preparing the double-layer oral membrane, the semeglutide is administrated through the
oral cavity, and after the insoluble or slowly eroded / dissolved backing layer (preventing
saliva from dissolving the
medicine) and the
adhesive layer containing the main
medicine are combined together, the one-way delivery of the main
medicine can be realized; through experiments, it is accidentally found that when temperature-sensitive materials such as
poloxamer are added to be combined with a conventional
adhesive for use, the
residence time of the medicine in the
oral mucosa can be remarkably prolonged, the
curative effect of the medicine is improved, and the main mechanism is that after the medicine is administered, in the oral temperature environment, after the medicine makes contact with
mucus on the surface of the
oral mucosa, the
oral mucosa does not adhere to the oral mucosa. And after the entanglement and piling effects among
poloxamer micelles are intensified to form gel, the gel and a conventional adhesive are cooperated to improve the adhesion between the oral membrane and the oral mucosa. Besides, the medicine can be removed at any time,
blood sugar can be better controlled, T2DM complications can be better reduced, a more ideal taking mode is provided for
weight loss patients, and a new administration mode is provided for reducing
blood sugar and reducing weight. The prepared
oral cavity membrane is small in size, light in weight, thin, convenient to apply, carry and transport, safe and
environmentally friendly to use and capable of meeting the requirements of old people and travelers.