An inhaler is disclosed wherein medicament in a dosing chamber is aerosolized with a vibrator piezoelectric transducer. A spacer is provided between a face of the transducer and a wall of the dosing chamber.本發明揭示一種吸入器,其中運用一振動器壓電轉換器來使一給料室中之藥劑成煙霧狀散開。在該轉換器之一表面與該給料室之一牆壁之間提供一間隔器。