A system is disclosed for the administration of a powdered medicament by inhalation. The system comprises a container (20, 60, 120) containing a unit dose of medicament in powder form, the container (20, 60, 120) having at least one dispensing aperture (21), and a device (10, 50, 100) having a chamber (19, 56, 110) adapted to receive said container (20, 60, 120). The device (10, 50, 100) further comprises air inlet means (12, 12a, 13, 13a, 112, 113) by which air may be drawn into the chamber (19, 56, 110) and means (11, 111) by which air and entrained medicament may be drawn out of the chamber (19, 56, 110). The system is arranged such that the container (20, 60, 120), in use, is stationary within the chamber (19, 56, 110).