| abstract |
The invention relates to an aerosol composition suitable for administration to patients with COPD using a metered dose inhaler (pMDI) containing glycopyrronium bromide together with formoterol. The composition also contains HFA (hydrofluoroalkane) propellant, a co-solvent and an inorganic acid in an amount sufficient to stabilize the components — glycopyrronium bromide and formoterol. Optionally, the composition also contains beclomethasone dipropionate. |