An inhalation device for delivery of a powdered medicament comprising a suction tube (21) and one or more doses of powdered medicament. The suction tube (21) has a distal end (28) and a proximal end (29) with an air passage (30) therethrough, the distal end (28) having an air inlet and the proximal end (29) having an air outlet which forms the mouthpiece of the device. The inhalation device further comprises a means for drying air (23) drawn by a user into the inhalation device prior to contact with the aggregated powdered medicament such that a dose of powdered medicament will be dispersed in dried air for delivery at the proximal end.