AEROSOL FORMULATION FOR INHALATION COMPRISING AN ANTICHOLINERGIC

• US 20060222598A1
• Filed: 06/15/2006
• Published: 10/05/2006
• Est. Priority Date: 08/14/2002
• Status: Active Grant

• Current Assignee: Friedrich Schmidt
• Original Assignee: Friedrich Schmidt
• Inventors: Schmidt, Friedrich
• Granted Patent: US 7,611,694 B2
• Time in Patent Office: Days
• US Class Current: 424/45
• CPC Class Codes: A61K 31/33 Heterocyclic compounds
• CPC Class Codes: A61K 31/4745 condensed with ring systems having nitrogen as a ring hetero atom, e.g. phenantrolines yohimbine derivatives, vinblastine A61K31/475; ergoline derivatives A61K31/48
• CPC Class Codes: A61K 31/5375 1,4-Oxazines, e.g. morpholine
• CPC Class Codes: A61K 9/0078 for inhalation via a nebulizer such as a jet nebulizer, ultrasonic nebulizer, e.g. in the form of aqueous drug solutions or dispersions

Abstract

The present invention relates to a propellant-free, aqueous aerosol formulation for anticholinergics of formula 1
wherein X³¹ denotes an anion.

Claims

1. ) An aqueous pharmaceutical formulation for inhalation comprising at least one compound as active drug substance of formula

2. ) The aqueous pharmaceutical formulation according to claim 1 further comprising one or more pharmaceutically acceptable excipients or complexing agents or mixtures thereof.

3. ) The aqueous pharmaceutical formulation according to claim 1, containing at least one compound of formula 1 wherein X⁻

is selected from the group consisting of chloride, bromide, 4-toluenesulphonate and methanesulphonate.

4. ) The aqueous pharmaceutical formulation according to claim 1, wherein the pharmacologically acceptable acid is selected from the inorganic acids hydrochloric acid, hydrobromic acid, nitric acid, sulphuric acid and phosphoric acid or from the organic acids ascorbic acid, citric acid, malic acid, tartaric acid, maleic acid, succinic acid, fumaric acid, acetic acid, formic acid and propionic acid.

5. ) The aqueous pharmaceutical formulation according to claim 3, characterised by a pH of2.5to 6.5.

6. ) The aqueous pharmaceutical formulation according to claim 2, wherein the pharmaceutical excipient is benzalkonium chloride.

7. ) The aqueous pharmaceutical formulation according to claim 6, characterised in that the content of benzalkonium chloride is from 1 to 50 mg per 100 ml of solution.

8. ) The aqueous pharmaceutical formulation according to claim 1, characterised in that a pharmacologically active cation of the compound of 1 is present in the formulation in an amount of about 4 to 2000 mg per 100 ml of formulation.

9. ) The aqueous pharmaceutical formulation according to claim 2, which comprises at least one complexing agent.

10. ) The aqueous pharmaceutical formulation according to claim 9, characterised in that the content of the complexing agent is 5 to 20 mg per 100 ml of formulation.

11. ) The aqueous pharmaceutical formulation according to claim 1 in an inhaler suitable for nebulising the formulation.