Dissolvable adhesive films for delivery of pharmaceutical or cosmetic agents
The invention provides disintegratable adhesive films containing a mixture of high molecular weight and low molecular weight water soluble components; and a pharmaceutically or cosmetically active ingredient. Optionally, the films contain a starch component, a polysaccharide component, a filler, a plasticizer and/or humectant. The films are preferably in the form of an adhesive layer having a thickness sufficient to disintegrate, when exposed to a moist environment and/or a trigger compound, and release the active ingredient. The films can be cut to any desired size or shape to provide conveniently useable unit dosage forms for administration to wet or moist body surfaces for human, pharmaceutical, cosmetic, or veterinary applications. The invention further provides various end uses and methods of administering the film compositions.
1. A method for delivering a pharmaceutically or cosmetically active agent to a surface of a human or animal body, comprising:
providing a dissolvable film comprising:
a first water soluble polymer in an amount of from 2 to 35 weight percent comprising at least one hydroxypropyl methylcellulose polymer having a molecular weight of about 30,000 daltons;
a second water soluble polymer in an amount of from 2 to 35 weight percent comprising at least one hydroxypropyl methylcellulose polymer having a molecular weight of about 90,000 daltons
at least one pharmaceutically or cosmetically active agent;
at least one hydroxypropyl cellulose having a molecular weight of about 140,000 daltons;
at least one starch component;
at least one polysaccharide component; and
at least one of a plasticizer, humectant or a combination thereof,
wherein the film is essentially free of surfactant, and the first and second water soluble polymers are present in relative amounts such that the film disintegrates to release the active ingredient after contact with or exposure to a moist body surface; and
applying the dissolvable film to adhere to the body surface for a sufficient time for the film to release the active agent.
2. The method of claim 1 wherein the film is adhesive when exposed to moisture.
3. The method of claim 1 wherein the film is part of a multilayer device.
4. The method of claim 3 wherein the multilayer device comprises a structure selected from the group consisting of a bandage, wound dressing, and gauze structure.
5. The method of claim 1 wherein the film is part of a device that comprises multiple layers of dissolvable films.
6. The method of claim 5 wherein one or more of the multiple layers have different dissolution rates.
7. The method of claim 1 wherein the film further comprises polyvinyl pyrrolidone.
8. The method of claim 1 wherein a plasticizer is present and the plasticizer is selected from the group consisting of sorbitol, polyethylene glycol, and polyethylene oxide.
9. The method of claim 1 wherein the polysaccharide component comprises maltodextrin.
10. The method of claim 1 wherein the film is in a unit dosage form.