An inhaler device for administering a dose of the drug, is located in (42) within the means for receiving (42), partition accepted compartment containing a medicament, the present invention is, by this and a drug extraction facilitating means for enabling the extraction of the drug from (42) the compartment, and (22), the extraction facilitating means (22), the inhaler (1) an agent that is (i) Extraction for directing the outlet, a first fluid passageway extending through the extraction facilitating means and (ii) use, a fluid the compartment (42) in through the sealing material of the compartment, which is perforated by (22) the extraction facilitating means and and means for providing a second fluid passage for directing.本発明は、薬剤の服用量を投与するための吸入器装置であって、薬剤を収容する区画(42)を受け入れるための手段と、受け入れられた区画(42)内に位置して、これにより前記区画(42)からの薬剤の抽出を可能とするための薬剤抽出促進手段(22)と、を備え、抽出促進手段(22)は、(i)抽出された薬剤を吸入器(1)の出口に差し向けるための、抽出促進手段を通って延びる第1流体通路と、(ii)使用時に、抽出促進手段(22)によって穿孔された区画の密封材料を通して前記区画(42)内に流体を差し向けるための第2流体通路を提供する手段と、を有する。