Abstract: Disclosed herein are inhalation devices and methods for storage and release of substances in powder form such as a drug. The inhalation devices can include a plurality of powder chambers for storing a respective dose of a preloaded powdery substance, and an uncovering device for dispensing one dose at a time. The inhalation devices can include an advancing mechanism is arranged to feed the dose ring one powder chamber at a time. The powder chambers can be oriented in the surface of the dose ring and at least one seal is arranged to seal the powder chambers. The powder chambers can be uncovered or opened to at least a portion of an air channel, and the content of the powder chamber is exposed to, and can pass through, the air channel by means of an air flow.

Abstract: The invention relates to a disposable inhaler intended for single use and for substances in powder form which comprises a preferably elongated shape body arranged to, at least partially be inserted in the user's mouth, including one or more air channels arranged in the shape of the body, that a foil is arranged with inlet holes and an outlet holes in connection with the air channels, that a substance in powder form is placed in the air channels, that the foil is arranged to, in the inhaler storage mode, cover the inlet and outlet holes and thus prevent the substance in powder form to fall out of the inhaler air channels, and that tape is removable to be able to use the inhaler and when it is removed exposes the inhaler in-and outlet holes and thus facilitates that the substance in powder form, which is placed in the air channel, can leave the air channel using the airflow that occurs when the user inhales, through the inhaler.