How does one tell if the AeroChamber isn't working and needs replaced.
For some time now, when I take my seretide 250 via AeroChamber, there is still a lot of powder left in the mouthpiece of inhaler case. Looks like it's not even reaching the spacer.
Is it me, not doing a hard enough sook, though goodness knows I'm trying, or the spacer at fault.