A pharmaceutical composition comprising: (a) an anticholinergic of
formula 1 ##STR00001## wherein X.sup.- is an anion with a single
negative charge; (b) a corticosteroid; and (c) a betamimetic, wherein
each component (a), (b), and (c) are optionally in the form of the
solvates or hydrates thereof, processes for preparing them, and their use
in the treatment of respiratory diseases.