A powder inhaler comprises a medicament container, a rotatable metering disc
extending
into the interior of the medicament container and an air channel through which
air is drawn via a mouthpiece. The metering disc has one or more peripherally located
dosing grooves extending axially through the metering disc. The dosing grooves
are filled with a metered dose of the medicament while being inside the medicament
container and are transferred to the air channel wherein the stream of inhaled
air discharges the dose of the medicament directly from the dosing groove.
