Abstract: A closeable dispensing device for dispensing a liquid, viscous or pasty medium contained in a container has a first opening for dispensing the medium located in the container, a second opening for ventilating and/or venting the container, and a closure device which can be actuated in order to produce and break a connection between the first opening and the container and between the second opening and the container. The dispensing device described is distinguished in that the closure device is designed such that, when actuated as is required in order to produce a connection between the first opening and the container, it first of all produces a connection between the second opening and the container and only then produces the connection between the first opening and the container. Such a dispensing device is straightforward to use and, nevertheless, cannot under any circumstances open of its own accord.