This invention relates to an inhaler with a respiration indicator with which respiratory activity can be reliably indicated even under adverse circumstances. The inhaler has a chamber wall forming a chamber and a dispensing device for fluidic connection of the chamber to a bodily opening, preferably a nostril, whereby the respiration indicator has a flexible wall section of the chamber wall or is formed in this way, whereby the wall section is designed to indicate a respiratory activity by deformation and/or movement.
