Abstract: A method for the production of nanodispersions, in which at least two metered partial streams are brought together in such a way that they are subject to thorough mixing caused by turbulence. The partial streams have a flow rate in the range from 0.1 to 500 ml/h and the mixed stream has an overall flow rate in the range from 1 ml/h to 500 ml/h. The turbulent mixing leads to the formation of a disperse phase in a continuous phase with a dispersity of 0.1 to 5000 nm. Another object of the invention is a method for the in-situ formulation of a pharmaceutical dispersion, with in-line application of the pharmaceutical dispersion.