further preferred embodiment the amount of suspending agent leads to a powder liquid ration of about 0 4 g ml to about 0 75 g ml according to one embodiment of the invention the total amount of the suspending agent can be directly added in a yet preferred embodiment according to the invention the suspending agent is added in at least two preferably two portions the first portion being added to the tiotropium salt the second portion being added after addition of the excipient if the suspending agent is added in two portions the first portion added is about 10 to 90 preferably 20 to 70 more preferably 30 to 60 of the suspending agent used in total after addition of the suspending agent the suspension thus obtained is stirred and optionally subjected to sonic treatment for about 1 minute to 60 minutes preferably 2 minutes to 30 minutes however it is apparent for the person skilled in the art that the mixing and optionally sonic treatment time may vary from the time periods mentioned hereinbefore in dependence on the batch size of the prepared inhalation powder after mixing and optionally sonic treatment the physiologically acceptable excipient is added if according to a preferred embodiment of the invention only one portion of the suspending agent has been added in the process steps described hereinbefore the remaining suspending agent is added after addition of the excipient after addition of the suspending agent the suspension thus obtained is stirred and optionally subjected to sonic treatment for about 1 minute to 60 minutes preferably 2 minutes to 30 minutes however it is apparent for the person skilled in the art that the mixing.