Abstract: A drug product includes a multidose dry powder inhalation device. The device has a medicament chamber and a desiccant chamber adjacent to the medicament chamber, and a pharmaceutical composition therein. The pharmaceutical composition includes a pharmaceutically acceptable salt of tanimilast. The desiccant chamber is filled with molecular sieves.

Abstract: A powder inhaler includes a casing having a mouthpiece, an inhalation channel, a container for a powdered medicament, and a metering device with a shuttle having a dosing recess. The shuttle is movable between a filling position, in which the dosing recess is in alignment with an opening of the container to be filled with a dose of the powdered medicament, and an inhalation position, in which the dosing recess is in alignment with the inhalation channel, for enabling inhalation of the dose of the powdered medicament contained in the dosing recess through the mouthpiece. A sealing device is operationally active at a coupling zone of the shuttle with the container when the shuttle is in the filling position, the coupling zone circumscribing the dosing recess and the opening.