A nebulizer (1) is proposed which receives a container (3) with a fluid (2) and an indicator device (25). The indicator device stops further use of the container in a locked state when a predetermined number of uses has been reached or exceeded. In the locked state, a locking device (26) locks the nebulizer against rotation in a partially tensioned state and, thus, against further use. After replacement of the container including the indicator device, the nebulizer can be used again.