Claims for Patent: 8,685,442

Summary for Patent: 8,685,442

Title:	Capsules containing high doses of levodopa for pulmonary use
Abstract:	The present invention provides a capsule containing an inhalable powder composition wherein the composition comprises about 75% by weight or more levodopa, dipalmitoylphosphatidylcholine (DPPC) and a salt characterized by a working density of less than about 100 g/L. The invention further provides a capsule containing an inhalable powder composition wherein the composition comprises about 75% by weight or more levodopa, dipalmitoylphosphatidylcholine (DPPC) and a salt characterized by a working density of less than about 100 g/L wherein the capsule material comprises hydroxypropylmethylcellulose (HPMC) and titanium dioxide.
Inventor(s):	Batycky; Richard P. (Newton, MA), Lipp; Michael M. (Framingham, MA), Kamerkar; Abhijit (Boston, MA), Penachio; Ernest D. (Haverhill, MA), Kee; Kevin D. (Somerville, MA)
Assignee:	Civitas Therapeutics, Inc. (Chelsea, MA)
Application Number:	13/945,160
Patent Claims:	1. A capsule for use in an inhalation device filled with a dry powder comprising levodopa and having a working density of between about 0.02 to about 0.1 g/cm.sup.3, and containing a capsule shell comprising hydroxypropyl methylcellulose (HPMC) and titanium dioxide; wherein said capsule emits more powder comprising levodopa upon actuation of the inhalation device as compared to a capsule that comprises HPMC and is free of titanium dioxide; and wherein said dry powder comprises about 75% by weight or more of levodopa. 2. The capsule of claim 1, wherein said working density is between about 0.02 g/cm.sup.3 to about 0.05 g/cm.sup.3. 3. The capsule of claim 1, wherein said dry powder comprises from about 2 to about 8% of water by weight. 4. The capsule of claim 3, wherein said dry powder comprises from about 5 to about 6% of water by weight. 5. The capsule of claim 1, wherein said capsule is a 00 size capsule. 6. The capsule of claim 5, wherein said dry powder comprises between about 15 and 50 milligrams of levodopa. 7. The capsule of claim 6, wherein said dry powder comprises between about 25 and 35 milligrams of levodopa. 8. The capsule of claim 1, wherein said dry powder further comprises a salt. 9. The capsule of claim 8, wherein said salt is sodium chloride. 10. The capsule of claim 8, wherein said dry powder further comprises a phospholipid. 11. The capsule of claim 10, wherein said phospholipid is dipalmitoylphosphatidylcholine (DPPC). 12. The capsule of claim 1 wherein the dry powder further comprises DPPC and sodium chloride. 13. The capsule of claim 1 wherein said dry powder comprises a fine particle fraction (FPF) between about 50 to about 70% of the nominal dose. 14. The capsule of claim 1 wherein the capsule is filled with about 30 to about 50 milligrams of dry powder.