A blister pack for containing medicament in powder form for use within an inhalation device, the blister pack comprising an elongate strip of base material containing equally spaced recesses along the length of the strip, each recess having walls defining a cavity, and a lid hermetically sealed onto the base material to close the cavities and define pockets of medicament powder, the blister strip being adapted to have each recess filled with a metered dose of medicament powder, each recess being elongate having its longitudinal axis extending across the strip and having longer side walls joined by a base, whereby the volume of each recess is adapted to be greater than the volume of the metered dose and each pocket of the blister strip is adapted to be opened by either pulling back the lid or puncturing the lid or the walls of the recess.
