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An inhalation device for self-administration to a patient powdered medicaments contained in a capsule. A chamber receives a capsule containing a powdered medicament. The chamber has a nozzle through which air from the chamber can be inhaled and the air inlet apertures leading into the chamber and so

An inhalation device for self-administration to a patient powdered medicaments contained in a capsule. A chamber receives a capsule containing a powdered medicament. The chamber has a nozzle through which air from the chamber can be inhaled and the air inlet apertures leading into the chamber and so arranged that the air flow caused by inhalation through the nozzle will cause the capsule to be agitated. A magazine is slidable in the chamber to and from an operative position and is also rotatable in the chamber. The magazine has therein a capsule loading passage and at least one other passage. A capsule piercing needle and a capsule ejecting member are so arranged and positioned inside the chamber that the said passages can be registered as desired with either the needle or the ejector member on rotation of the magazine and so that movement of the magazine to the operative position will cause a capsule in a passage registered with the needle to engage the needle and be pierced by it and will cause a capsule in a passage registered with the ejector member to be engaged by the member thereby to displace the capsule from its passage into the chamber so that the powdered medicament from the pierced capsule can be aspirated through the nozzle by the inhalation of the patient.

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