Pharmaceuticals in the gaseous state are exceptional and special forms of application are required. In the case of medical ozone/oxygen mixtures, oxygen is not only used as a generator gas to produce the corresponding ozone mixture, but also, at the same time, as a solvent in the range from 0.05 to max. 5.0 vol% ozone, corresponding to the concentration range of 1.0 to 100 μg/ml ozone applied in practice.