Delivery of anti-migraine compounds through an inhalation route

• US 7,465,437 B2
• Filed: 06/16/2006
• Issued: 12/16/2008
• Est. Priority Date: 05/24/2001
• Status: Expired due to Fees

• Current Assignee: Alexza Pharmaceuticals Inc. (Grupo Ferrer Internacional SA)
• Original Assignee: Alexza Pharmaceuticals Inc. (Grupo Ferrer Internacional SA)
• Inventors: Zaffaroni, Alejandro C, Rabinowitz, Joshua D
• Primary Examiner(s): Haghighatian; Mina
• Application Number:
  US11/454,573
• Publication Number:
  US 20060239936A1
• Time in Patent Office: 914 Days
• Field of Search: 424/45, 424/46, 424/434, 424/489, 424/499, 514/958, 128/200.14, 128/200.15, 128/200.24
• US Class Current: 424/45
• CPC Class Codes: A61K 31/00 Medicinal preparations containing organic active ingredients
• CPC Class Codes: A61K 31/137 Arylalkylamines, e.g. amphetamine, epinephrine, salbutamol, ephedrine or methadone
• CPC Class Codes: A61K 31/138 Aryloxyalkylamines, e.g. propranolol, tamoxifen, phenoxybenzamine atenolol A61K31/165; pindolol A61K31/404; timolol A61K31/5377
• CPC Class Codes: A61K 31/165 having aromatic rings, e.g. colchicine, atenolol, progabide
• CPC Class Codes: A61K 31/19 Carboxylic acids, e.g. valproic acid salicylic acid A61K31/60
• CPC Class Codes: A61K 31/192 having aromatic groups, e.g. sulindac, 2-aryl-propionic acids, ethacrynic acid cannabinoids A61K31/658
• CPC Class Codes: A61K 31/195 having an amino group
• CPC Class Codes: A61K 31/216 of acids having aromatic rings, e.g. benactizyne, clofibrate
• CPC Class Codes: A61K 31/27 of carbamic or thiocarbamic acids, meprobamate, carbachol, neostigmine
• CPC Class Codes: A61K 31/404 Indoles, e.g. pindolol
• CPC Class Codes: A61K 31/405 Indole-alkanecarboxylic acids; Derivatives thereof, e.g. tryptophan, indomethacin
• CPC Class Codes: A61K 31/407 condensed with other heterocyclic ring systems, e.g. ketorolac, physostigmine
• CPC Class Codes: A61K 31/4196 1,2,4-Triazoles
• CPC Class Codes: A61K 31/421 1,3-Oxazoles, e.g. pemoline, trimethadione
• CPC Class Codes: A61K 31/422 not condensed and containing further heterocyclic rings
• CPC Class Codes: A61K 31/423 condensed with carbocyclic rings
• CPC Class Codes: A61K 31/437 the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
• CPC Class Codes: A61K 31/473 ortho- or peri-condensed with carbocyclic ring systems, e.g. acridines, phenanthridines
• CPC Class Codes: A61K 31/485 Morphinan derivatives, e.g. morphine, codeine
• CPC Class Codes: A61K 31/49 Cinchonan derivatives, e.g. quinine
• CPC Class Codes: A61K 31/495 : having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazinesA61K31/48 takes precedence ; with three nitrogen atoms A61K31/53
• CPC Class Codes: A61K 31/496 : Non-condensed piperazines containing further heterocyclic rings, e.g. rifampin, thiothixene or sparfloxacin
• CPC Class Codes: A61K 31/4985 : Pyrazines or piperazines ortho- or peri-condensed with heterocyclic ring systems
• CPC Class Codes: A61K 31/501 : not condensed and containing further heterocyclic rings
• CPC Class Codes: A61K 31/519 : ortho- or peri-condensed with heterocyclic rings
• CPC Class Codes: A61K 31/53 : having six-membered rings with three nitrogens as the only ring hetero atoms, e.g. chlorazanil, melamine melarsoprol A61K31/555 ; with four nitrogen atoms A61K31/495
• CPC Class Codes: A61K 31/551 : having two nitrogen atoms, e.g. dilazep
• CPC Class Codes: A61K 31/5517 : condensed with five-membered rings having nitrogen as a ring hetero atom, e.g. imidazobenzodiazepines, triazolam
• CPC Class Codes: A61K 47/54 : the modifying agent being an organic compound
• CPC Class Codes: A61K 9/007 : Pulmonary tract; Aromatherapy
• CPC Class Codes: A61K 9/0073 : Sprays or powders for inhalation; Aerolised or nebulised preparations generated by other means than thermal energy; nasal sprays A61K9/0043; inhalation of vapours of volatile or heated drugs, e.g. essential oils or nicotine, A61K9/007; devices A61M
• CPC Class Codes: A61K 9/12 : Aerosols; Foams A61K9/0043, A61K9/0056, A61K9/006, A61K9/0073 take precedence; spray-films A61K9/7015
• CPC Class Codes: A61M 11/042 : electrical
• CPC Class Codes: A61M 15/06 : Inhaling appliances shaped like cigars, cigarettes or pipes
• CPC Class Codes: A61M 2205/8206 : battery-operated
• CPC Class Codes: A61P 15/10 : for impotence
• CPC Class Codes: A61P 21/02 : Muscle relaxants, e.g. for tetanus or cramps
• CPC Class Codes: A61P 25/00 : Drugs for disorders of the nervous system
• CPC Class Codes: A61P 25/06 : Antimigraine agents
• CPC Class Codes: A61P 25/08 : Antiepileptics; Anticonvulsants
• CPC Class Codes: A61P 25/16 : Anti-Parkinson drugs
• CPC Class Codes: A61P 25/18 : Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
• CPC Class Codes: A61P 25/20 : Hypnotics; Sedatives
• CPC Class Codes: A61P 25/22 : Anxiolytics
• CPC Class Codes: A61P 25/24 : Antidepressants
• CPC Class Codes: A61P 25/32 : Alcohol-abuse
• CPC Class Codes: A61P 29/00 : Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• CPC Class Codes: A61P 31/04 : Antibacterial agents
• CPC Class Codes: A61P 37/08 : Antiallergic agents antiasthmatic agents A61P11/06; ophthalmic antiallergics A61P27/14
• CPC Class Codes: A61P 43/00 : Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• CPC Class Codes: F24V 30/00 : Apparatus or devices using heat produced by exothermal chemical reactions other than combustion

Abstract

The present invention relates to the delivery of anti-migraine compounds through an inhalation route. Specifically, it relates to aerosols containing lidocaine, verapamil, diltiazem, isometheptene, or lisuride that are used in inhalation therapy. In a method aspect of the present invention, lidocaine, verapamil, diltiazem, isometheptene, or lisuride is administered to a patient through an inhalation route. The method comprises: a) heating a thin layer of lidocaine, verapamil, diltiazem, isometheptene, or lisuride, on a solid support to form a vapor; and, b) passing air through the heated vapor to produce aerosol particles having less than 5% drug degradation products. In a kit aspect of the present invention, a kit for delivering lidocaine, verapamil, diltiazem, isometheptene, or lisuride through an inhalation route is provided which comprises: a) a thin coating of a lidocaine, verapamil, diltiazem, isometheptene, or lisuride composition and b) a device for dispensing said thin coating as a condensation aerosol.

Claims

1. A condensation aerosol for delivery of lidocaine formed by heating a composition containing lidocaine coated on a solid support to form a vapor and condensing the vapor to form a condensation aerosol comprising particles, wherein the particles comprise at least 10 percent by weight of lidocaine and less than 5 percent by weight of lidocaine degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

2. The condensation aerosol according to claim 1, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

3. The condensation aerosol according to claim 1 or claim 2, wherein the geometric standard deviation around the MMAD is less than 3.0.

37. The condensation aerosol according to claim 2, wherein the condensing comprises allowing the vapor to cool.

4. A condensation aerosol for delivery of verapamil formed by heating a composition containing verapamil coated on a solid support to form a vapor and condensing the vapor to form a condensation aerosol comprising particles, wherein the particles comprise at least 10 percent by weight of verapamil and less than 5 percent by weight of verapamil degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

5. The condensation aerosol according to claim 4, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

6. The condensation aerosol according to claim 4 or claim 5, wherein the geometric standard deviation around the MMAD is less than 3.0.

38. The condensation aerosol according to claim 5, wherein the condensing comprises allowing the vapor to cool.

7. A condensation aerosol for delivery of diltiazem formed by heating a composition containing diltiazem coated on a solid support to form a vapor and condensing the vapor to form a condensation aerosol comprising particles, wherein the particles comprise at least 10 percent by weight of diltiazem and less than 5 percent by weight of diltiazem degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

8. The condensation aerosol according to claim 7, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

9. The condensation aerosol according to claim 7 or claim 8, wherein the geometric standard deviation around the MMAD is less than 3.0.

39. The condensation aerosol according to claim 8, wherein the condensing comprises allowing the vapor to cool.

10. A condensation aerosol for delivery of isometheptene formed by heating a composition containing isometheptene coated on a solid support to form a vapor and condensing the vapor to form a condensation aerosol comprising particles, wherein the particles comprise at least 10 percent by weight of isometheptene and less than 5 percent by weight of isometheptene degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

11. The condensation aerosol according to claim 10, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

12. The condensation aerosol according to claim 10 or claim 11, wherein the geometric standard deviation around the MMAD is less than 3.0.

40. The condensation aerosol according to claim 11, wherein the condensing comprises allowing the vapor to cool.

13. A condensation aerosol for delivery of lisuride by heating a composition containing lisuride coated on a solid support to form a vapor and condensing the vapor to form a condensation aerosol comprising particles, wherein the particles comprise at least 10 percent by weight of lisuride and less than 5 percent by weight of lisuride degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

14. The condensation aerosol according to claim 13, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

15. The condensation aerosol according to claim 13 or claim 14, wherein the geometric standard deviation around the MMAD is less than 3.0.

41. The condensation aerosol according to claim 14, wherein the condensing comprises allowing the vapor to cool.

16. A method of forming a lidocaine containing aerosol comprising:

(a) heating a composition containing lidocaine coated on a solid support to form a vapor; and

(b) condensing the vapor to form a condensation aerosol comprising particles,

wherein the particles comprise less than 5 percent by weight of lidocaine degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

17. The method according to claim 16, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

18. The method according to claim 17, wherein the coated composition comprises at least 10 percent by weight of lidocaine.

42. The method according to claim 17, wherein the condensing comprises allowing the vapor to cool.

19. A method of forming a verapamil containing aerosol comprising:

(a) heating a composition containing verapamil coated on a solid support to form a vapor; and

(b) condensing the vapor to form a condensation aerosol comprising particles,

wherein the particles comprise less than 5 percent by weight of verapamil degradation product, and the condensation aerosol has an MMAD of less than 5 microns.

20. The method according to claim 19, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

21. The method according to claim 20, wherein the coated composition comprises at least 10 percent by weight of verapamil.

43. The method according to claim 20, wherein the condensing comprises allowing the vapor to cool.

22. A method of forming a diltiazem containing aerosol comprising:

(a) heating a composition containing diltiazem coated on a solid support to form a vapor; and

(b) condensing the vapor to form a condensation aerosol comprising particles,

wherein the particles comprise less than 5 percent by weight of diltiazem degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

23. The method according to claim 22, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

24. The method according to claim 23, wherein the coated composition comprises at least 10 percent by weight of diltiazem.

44. The method according to claim 23, wherein the condensing comprises allowing the vapor to cool.

25. A method of forming a isometheptene containing aerosol comprising:

(a) heating a composition containing isometheptene coated on a solid support to form a vapor; and

(b) condensing the vapor to form a condensation aerosol comprising particles,

wherein the particles comprise less than 5 percent by weight of isometheptene degradation product, and the condensation aerosol has an MMAD of less than 5 microns.

26. The method according to claim 25, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

27. The method according to claim 26, wherein the coated composition comprises at least 10 percent by weight of isometheptene.

45. The method according to claim 26, wherein the condensing comprises allowing the vapor to cool.

28. A method of forming a lisuride containing aerosol comprising:

(a) heating a composition containing lisuride coated on a solid support to form a vapor; and

(b) condensing the vapor to form a condensation aerosol comprising particles,

wherein the particles comprise less than 5 percent by weight of lisuride degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

29. The method according to claim 28, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

30. The method according to claim 29, wherein the coated composition comprises at least 10 percent by weight of lisuride.

46. The method according to claim 29, wherein the condensing comprises allowing the vapor to cool.

31. A method of forming a drug containing aerosol comprising:

(a) heating a composition containing the drug and a pharmaceutically acceptable excipient coated on a solid support to form a vapor; and

(b) condensing the vapor to form a condensation aerosol comprising particles,

wherein the drug is selected from the group consisting of lidocaine, verapamil, diltiazem, isometheptene, and lisuride, and

wherein the particles comprise at least 10 percent by weight of the drug and less than 5 percent by weight of the drug degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

32. The method according to claim 31, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

33. The method according to claim 32, wherein the coated composition comprises at least 10 percent by weight of the drug.

47. The method according to claim 32, wherein the condensing comprises allowing the vapor to cool.

34. A method of forming a drug containing aerosol comprising:

(a) heating a composition containing a salt form of the drug coated on a solid support to form a vapor; and

(b) condensing the vapor to form a condensation aerosol comprising particles,

wherein the drug is selected from the group consisting of lidocaine, verapamil, diltiazem, isometheptene, and lisuride, and

wherein the particles comprise at least 10 percent by weight of the drug and less than 5 percent by weight of the drug degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

35. The method according to claim 34, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

36. The method according to claim 35, wherein the coated composition comprises at least 10 percent by weight of the salt form of the drug.

48. The method according to claim 35, wherein the condensing comprises allowing the vapor to cool.

49. A method of forming a drug containing aerosol comprising:

(a) heating a composition containing the drug coated on a solid support to form a vapor, and

(b) condensing the vapor to form a condensation aerosol comprising particles,

wherein the drug is selected from the group consisting of lidocaine, verapamil, diltiazem, isometheptene, and lisuride,

wherein the condensation aerosol is formed at a rate greater than 0.5 mg/second, and

wherein the particles comprise at least 10 percent by weight of the drug and less than 5 percent by weight of the drug degradation products, and the condensation aerosol has an MMAD of less than 5 microns.

50. The method according to claim 49, wherein the condensation aerosol has an MMAD of 0.2 to 3 microns.

51. The method according to claim 50, wherein the condensation aerosol is formed at a rate greater than 0.75 mg/second.

52. The method according to claim 51, wherein the condensation aerosol is formed at a rate greater than 1 mg/second.

53. The method according to claim 52, wherein the condensation aerosol is formed at a rate greater than 2 mg/second.

54. The method according to claim 49, wherein the condensing comprises allowing the vapor to cool.