Abstract: A powder inhaler includes a casing having a mouthpiece and housing an inhalation channel connected to an opening of the mouthpiece, a container for storing a powdered medicament and placed in the casing, a cover engageable with the casing to close the mouthpiece. The cover includes a sealing element made of a material that is more deformable than a material of the mouthpiece such that, when the cover is engaged with the casing and closes the mouthpiece, a main portion of the sealing element is coupled to the opening to tight close the opening.

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 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 formoterol, optionally in combination with a pharmaceutically acceptable salt of glycopyrronium and/or beclomethasone dipropionate. The desiccant chamber is filled with molecular sieves.