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Details for Patent: 5,783,207

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Details for Patent: 5,783,207

Title: Selectively removable nicotine-containing dosage form for use in the transmucosal delivery of nicotine
Abstract:The present invention relates to a selectively removable nicotine-containing dosage form for use in the transmucosal delivery of nicotine to a patient. More specifically, the present invention is directed to a nicotine-containing dosage-form comprising an attached holder member which may be used to manipulate the dosage form within the mouth of the patient as part of an effective smoking cessation program or in situations where smoking is undesirable or not permitted. Nicotine is released from a dosage form and absorbed through the intra-oral mucosal surfaces as the nicotine-containing matrix releases nicotine within the user's mouth. The user may selectively insert and remove the dosage form as desired to control the release of nicotine. In addition, the user may manipulate the dosage form by use of the holder means in such a manner to meet the user's psychological need or desire for ritualistic oral stimulation similar to cigarette smoking.
Inventor(s): Stanley; Theodore H. (Salt Lake City, UT), Hague; Brian (West Valley City, UT)
Assignee: University of Utah Research Foundation (Salt Lake City, UT)
Filing Date:Feb 04, 1997
Application Number:08/795,359
Claims:1. A selectively removable nicotine-containing dosage form for use in the transmucosal delivery of nicotine to a patient, the dosage form comprising:

a) a matrix dissolvable in the oral cavity of a patient;

b) a pharmacologically effective dose of nicotine dispersed in the matrix for absorption through the mucosal tissue of the mouth, pharynx, and esophagus of the patient; and

c) an attached holder member secured to the matrix, said holder member being so configured as to permit the selective removal and insertion of the dosage form into and out of the patient's mouth without directly handling the matrix, whereby the nicotine-containing dosage form can be manipulated in a manner that mimics manipulation of a cigarette during smoking in order to satisfy a psychological need or desire for ritualistic oral stimulation.

2. A selectively removable nicotine-containing dosage form as recited in claim 1 wherein the dose of nicotine base equivalents is within the range of about 0.1 mg to 20 mg.

3. A selectively removable nicotine-containing dosage form as recited in claim 1 wherein the nicotine is present within the matrix in the form of nicotine base.

4. A selectively removable nicotine-containing dosage form as recited in claim 1 wherein the nicotine is present within the matrix in the form of a nicotine salt compound.

5. A selectively removable nicotine-containing dosage form as recited in claim 1, further comprising a buffering agent dispersed into the matrix, said buffering agent increasing the pH within the oral cavity.

6. A selectively removable nicotine-containing dosage form as recited in claim 1 further comprising a binding agent.

7. A selectively removable nicotine-containing dosage form as recited in claim 1 wherein the matrix further comprises multiple layers of compositions.

8. A selectively removable nicotine-containing dosage form as recited in claim 7 wherein at least two of the multiple layers contain different quantities by weight of dispersed nicotine base.

9. A selectively removable nicotine-containing dosage form as recited in claim 7 wherein at least two of the multiple layers contain different quantities by weight of a dispersed permeation enhancing agent.

10. A selectively removable nicotine-containing dosage form as recited in claim 7 wherein at least two of the multiple layers contain different quantities by weight of a dispersed dissolution enhancing agent.

11. A selectively removable nicotine-containing dosage form as recited in claim 1 further comprising a coating layer containing a dissolution enhancing agent.

12. A selectively removable nicotine-containing dosage form as recited in claim 1 further comprising a coating layer containing nicotine base.

13. A selectively removable nicotine-containing dosage form as recited in claim 1 further comprising a coating layer containing a nicotine salt compound.

14. A selectively removable nicotine-containing dosage form as recited in claim 13 further comprising a buffering agent dispersed within the coating layer.

15. A selectively removable nicotine-containing dosage form as recited in claim 1 wherein the nicotine is dispersed into the matrix such that the concentration of nicotine available for absorption through the mucosal tissue of the mouth, pharynx, and esophagus varies over time as the matrix dissolves in the mouth of the patient.

16. A selectively removable nicotine-containing dosage form as recited in claim 15 wherein the concentration of nicotine within an outer portion of the matrix is greater than the concentration of nicotine within an inner portion of the matrix.

17. A selectively removable nicotine-containing dosage form as recited in claim 1 wherein the rate of dissolution of the matrix varies over time as the matrix is dissolved in the mouth of the patient.

18. A selectively removable nicotine-containing dosage form as recited in claim 17 wherein the rate of dissolution is greater during dissolution of an outer portion of the matrix than during dissolution of an inner portion of the matrix.

19. A selectively removable nicotine-containing dosage form as recited in claim 5 wherein the buffering agent is dispersed into the matrix in varying concentrations by weight.
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