The present invention is related to metered dose inhalation formulas and manufacturing process. The active pharmaceutical ingredient can be beta-2 agonists, corticosteroids, or a combination thereof. The inhalation formulas are homogenized suspensions with hydrofluoroalkane (HFA) propellant, minimal amount of ethanol and polyetheleneglycol (PEG) as suspending and particle size modifying agents.
本发明涉及计量吸入配方和生产工艺。活性药物成分可以是β-2 促效剂、皮质类
固醇或它们的组合。吸入配方为均质悬浮液,使用氢
氟烃(HFA)推进剂、极少量的
乙醇和聚
乙二醇(P
EG)作为悬浮剂和粒度调节剂。