Film delivery system for tetrahydrolipstatin
View Patent ↗The present invention includes a pharmaceutical-based film system which includes various small-scale forms of pharmaceutically active agents, including tetrahydrolipstatin, in a film base. Such forms include nanoparticles, microparticles, and combinations thereof. Methods of producing such film and providing a dosage of the pharmaceutical in a film are also provided.
1. A method of forming a stabilized solid form of a pharmaceutically active agent in a solid matrix wherein said solid form is present in the form of nanoparticles, microparticles, or combinations thereof, with said method comprising the steps of:
a. providing a mixture of a pharmaceutically active agent having a melting point less than or equal to about 100° C. and at least one water soluble polymer;
b. adding at least a portion of said mixture to a solvent, said solvent being heated to a temperature above said melting point of said pharmaceutically active agent whereby said active agent melts and forms a liquid dispersion of the active agent in the mixture; and
c. rapidly evaporating the solvent to form a solid matrix containing a stabilized solid dispersion of said pharmaceutically active agent in said solid matrix, wherein said pharmaceutically active agent is present in the form of nanoparticles, microparticles, or combinations thereof.
2. The method of claim 1 , wherein said pharmaceutically active agent is water-insoluble.
3. The method of claim 1 , wherein said stabilized, solid form of said pharmaceutically active agent is in a form of a collection or agglomeration of nanoparticles.
4. The method of claim 1 , wherein said stabilized, solid form of said pharmaceutically active agent is in a form of a collection of microparticles.
5. The method of claim 1 , wherein said pharmaceutically active agent is a lipase inhibitor.
6. The method of claim 1 , wherein said polymer is selected from the group consisting of a surfactant polymer, a cellulose polymer, and combinations thereof.
7. The method of claim 1 , wherein said solvent is heated to a temperature at least higher than the melting point of the pharmaceutically active agent.
8. The method of claim 1 , wherein said pharmaceutically active agent comprises about 0.001 to 60% by weight of the mixture.
9. The method of claim 1 , further comprising the step of preparing a pharmaceutical-based film with said stabilized solid form of said pharmaceutically active agent.
10. The method of claim 9 , wherein said pharmaceutically active agent is a lipase inhibitor.
11. A method of forming a stabilized solid form of a pharmaceutically active agent in a solid matrix wherein said solid form is present in the form of nanoparticles, microparticles, or combinations thereof, with said method comprising the steps of:
a. providing a mixture of a pharmaceutically active agent having a melting point less than or equal to about 100° C. and at least one water soluble polymer;
b. adding at least a portion of said mixture to a solvent, said solvent being heated to a temperature above said melting point of said pharmaceutically active agent whereby said active agent melts and forms a liquid dispersion of the active agent in the mixture; and
c. rapidly evaporating the solvent to form a solid matrix containing a stabilized solid dispersion of said pharmaceutically active agent in said solid matrix, wherein said pharmaceutically active agent is present in the form of nanoparticles, microparticles, or combinations thereof; and
d. gathering the resulting residue, wherein said resulting residue comprises said pharmaceutically active agent in the form of nanoparticles, microparticles, or combinations thereof.
12. The method of claim 11 , wherein said pharmaceutically active agent is a lipase inhibitor.
13. The method of claim 11 , wherein said pharmaceutically active agent is water-insoluble.
14. The method of claim 11 , wherein said polymer is selected from the group consisting of a surfactant polymer, a cellulose polymer and combinations thereof.
15. The method of claim 11 , wherein said solvent is heated to a temperature at least higher than the melting point of the pharmaceutically active agent.
16. The method of claim 11 , wherein said pharmaceutically active agent comprises about 0.001 to 60% by weight of the mixture.
17. The method of claim 11 , wherein said residue comprises said pharmaceutically active agent in the form of a collection or agglomeration of nanoparticles.
18. The method of claim 11 , wherein said residue comprises said pharmaceutically active agent in the form of microparticles.
19. The method of claim 11 , further comprising the step of preparing a pharmaceutical-based film with said residue.
20. The method of claim 19 , wherein said pharmaceutically active agent is a lipase inhibitor.
21. A method for preparing a pharmaceutically-based film which comprises forming a film containing a stabilized solid form as produced in claim 11 .
22. The method of claim 21 , wherein said pharmaceutically active agent is a lipase inhibitor.
23. The method of claim 21 , wherein said pharmaceutically active agent is water-insoluble.
24. The method of claim 21 , wherein said polymer is selected from the group consisting of a surfactant polymer, a cellulose polymer, and combinations thereof.
25. The method of claim 21 , wherein said pharmaceutically active agent is in a form of a collection of nanoparticles.
26. The method of claim 21 , wherein said pharmaceutically active agent is in a form of a collection of microparticles.
27. The method of claim 21 , wherein said solvent is heated to a temperature at least higher than the melting point of the pharmaceutically active agent.
28. The method of claim 21 , wherein said pharmaceutically active agent comprises about 0.001% to about 60% by weight of the mixture.
29. The method of claim 21 , wherein said stabilized solid form is in the form of nanoparticles.
30. The method of claim 29 , wherein said nanoparticles agglomerate together to form microparticles of pharmaceutically active agent.
31. The method of claim 30 , wherein said agglomerated microparticles are about 2 to about 4 microns in size.
32. The method of claim 29 , wherein said pharmaceutically active agent is a lipase inhibitor.
33. The method of claim 29 , wherein said polymer is selected from the group consisting of a surfactant polymer, a cellulose polymer, and combinations thereof.
34. The method of claim 29 , wherein said solvent is heated to a temperature at least higher than the melting point of the pharmaceutically active agent.
35. The method of claim 29 , wherein said pharmaceutically active agent comprises about 0.001 to 60% by weight of the mixture.
36. The method of claim 21 , wherein said stabilized solid form is in the form of microparticles.
37. The method of claim 36 , wherein said microparticles are about 2 to about 4 microns in size.
38. The method of claim 36 , wherein said pharmaceutically active agent is a lipase inhibitor.
39. The method of claim 36 , wherein said polymer is selected from the group consisting of a surfactant polymer, a cellulose polymer, and combinations thereof.
40. The method of claim 36 , wherein said solvent is heated to a temperature at least higher than the melting point of the pharmaceutically active agent.
41. The method of claim 36 , wherein said pharmaceutically active agent comprises about 0.001 to 60% by weight of the mixture.
42. The method of claim 1 , wherein said solvent is selected from the group consisting of water, organic solvents, and combinations thereof.
43. The method of claim 11 , wherein said solvent is selected from the group consisting of water, organic solvents, and combinations thereof.
44. The method of claim 21 , wherein said solvent is selected from the group consisting of water, organic solvents, and combinations thereof.
45. The method of claim 29 , wherein said solvent is selected from the group consisting of water, organic solvents, and combinations thereof.
46. The method of claim 36 wherein said solvent is selected from the group consisting of water, organic solvents, and combinations thereof.