Aerosol formulations containing P134a and particulate medicament
First Claim
1. A pharmaceutical aerosol formulation comprising:
- (a) an effective amount of a particulate bronchodilatory medicament;
(b) an effective amount of a particulate anti-inflammatory medicament; and
(c) 1,1,1,2-tetrafluoroethane as propellant;
which formulation contains less than 0.0001% surfactant by weight of the medicaments;
with the proviso that such medicaments are other than salmeterol, salbutamol, fluticasone propionate, beclomethasone dipropionate or a physiologically acceptable salt or solvate thereof, and wherein the particulate medicaments being present in an amount of 0.005% to 5% w/w relative to the total weight of the formulation and having a particle size of less than 100 microns.
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Accused Products
Abstract
A pharmaceutical formulation comprising (i) one or more particulate medicaments, and (ii) 1,1,1,2-tetrafluoroethane as propellant, which formulation contains less than 0.0001% w/w surfactant based upon the weight of medicament, particulate medicament being present in an amount from 0.005 to 5% w/w relative to the total weight of the formulation and having a particle size of less than 100 microns, with the proviso that said medicament is other than salmeterol, salbutamol, fluticasone propionate, beclomethasone dipropionate or a physiologically acceptable salt or solvate thereof and with the proviso that when said formulation consists of betamethasone, ergotamine tartrate or sodium cromoglycate and 1,1,1,2-tetrafluoroethane the weight to weight ratio of medicament to propellant is other than 69:7900 or 0.866% w/w.
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Citations
20 Claims
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1. A pharmaceutical aerosol formulation comprising:
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(a) an effective amount of a particulate bronchodilatory medicament;
(b) an effective amount of a particulate anti-inflammatory medicament; and
(c) 1,1,1,2-tetrafluoroethane as propellant;
which formulation contains less than 0.0001% surfactant by weight of the medicaments;
with the proviso that such medicaments are other than salmeterol, salbutamol, fluticasone propionate, beclomethasone dipropionate or a physiologically acceptable salt or solvate thereof, and wherein the particulate medicaments being present in an amount of 0.005% to 5% w/w relative to the total weight of the formulation and having a particle size of less than 100 microns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, 18, 19)
(a) an effective amount of a particulate bronchodilatory medicament;
(b) an effective amount of a particulate anti-inflammatory medicament; and
(c) 1,1,1,2-tetrafluoroethane as propellant;
which formulation is free of surfactant.
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3. A pharmaceutical aerosol formulation according to claim 1 wherein the bronchodilatory medicament is selected from the group consisting of ephedrine, epinephrine, fenoterol, formoterol, isoprenaline, metaproterenol, phenylephrine, phenylpropanolamine, pirbuterol, reproterol, rimiterol, terbutaline, and (−
- )-4-amino-3,5-dichloro-α
-[[[6-[2-(2-pyridinyl)ethoxy]hexyl]amino]-methyl]benzenemethanol and salts thereof.
- )-4-amino-3,5-dichloro-α
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4. A pharmaceutical aerosol formulation according to claim 3 wherein the bronchodilatory medicament is formoterol or a salt thereof.
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5. A pharmaceutical aerosol formulation according to claim 1 wherein the bronchodilatory medicament is selected from the group consisting of isoetharine, tulobuterol, orciprenaline and salts thereof.
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6. A pharmaceutical aerosol formulation according to claim 1 wherein the bronchodilatory medicament is an anti-cholinergic medicament.
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7. A pharmaceutical aerosol formulation according to claim 6 wherein the anti-cholinergic medicament is ipratropium or a salt thereof.
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8. A pharmaceutical aerosol formulation according to claim 1 wherein the anti-inflammatory medicament is an anti-allergic medicament.
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9. A pharmaceutical aerosol formulation according to claim 8 wherein the anti-allergic medicament is sodium cromoglycate.
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10. A pharmaceutical aerosol formulation according to claim 9 comprising sodium cromoglycate as anti-inflammatory medicament and isoprenaline as bronchodilatory medicament.
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11. A pharmaceutical aerosol formulation according to claim 1 wherein the anti-inflammatory medicament is a steroidal anti-inflammatory medicament.
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12. A pharmaceutical aerosol formulation according to claim 11 wherein the steroidal anti-inflammatory medicament is selected from the group consisting of flunisolide, tipredane and triamcinolone acetonide.
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13. A pharmaceutical aerosol formulation according to claim 11 wherein the steroidal anti-inflammatory medicament is budesonide.
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14. A pharmaceutical aerosol formulation according to claim 11 comprising (i) formoterol or a salt thereof as bronchodilatory medicament and (ii) budesonide as anti-inflammatory medicament.
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17. A pharmaceutical aerosol formulation according to claim 1 containing 0.01-1% w/w of medicament relative to the total weight of the formulation.
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18. A method of treatment of respiratory disorders by inhalation therapy which comprises administering to a patient a pharmaceutical aerosol formulation according to claim 1.
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19. A method of treatment of respiratory disorders by inhalation therapy which comprises administering to a patient a pharmaceutical aerosol formulation according to claim 14.
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15. A pharmaceutical aerosol formulation consisting essentially of:
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(a) an effective amount of particulate formoterol or a salt thereof as bronchodilatory medicament;
(b) an effective amount of particulate budesonide as anti-inflammatory medicament; and
(c) 1,1,1,2-tetrafluoroethane as propellant;
which formulation contains less than 0.0001% surfactant by weight of the medicaments and wherein the particulate medicaments being present in an amount of 0.005% to 5% w/w relative to the total weight of the formulation and having a particle size of less than 100 microns. - View Dependent Claims (20)
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16. A pharmaceutical aerosol formulation consisting of:
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(a) an effective amount of particulate formoterol or a salt thereof as bronchodilatory medicament;
(b) an effective amount of particulate budesonide as anti-inflammatory medicament; and
(c) 1,1,1,2-tetrafluoroethane as propellant and wherein the particulate medicaments being present in an amount of 0.005% to 5% w/w relative to the total weight of the formulation and having a particle size of less than 100 microns.
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Specification