Abstract: The invention relates to the use of quaternary ammonium compounds for preventing precipitations of fluoroquinolones from their solutions and to stable, tolerated pharmaceuticals which are particularly suitable for parenteral use and which contain, in dissolved form, a fluoroquinolone and a quaternary ammonium compound.

Abstract: The invention relates to pharmaceutical formulations in liquid form, containing fluoroquinolones and antioxidative sulphur compounds. The formulations are particularly suitable for parenteral uses and are distinguished, inter alia, by good tolerance.

Abstract: In the procedure for the production of a formulation of parenterally administrable pharmaceutical preparations, a liposome dispersion is used as a carrier for a pharmaceutical active compound. For the preparation of the liposome dispersion, an aqueous predispersion of one or more amphiphilic substances is fed to a high-pressure homogenizer in which the predispersion is pumped under a pressure from 600 bar to 900 bar through a homogenizer nozzle (2) having a diameter of 0.1 to 0.5 mm. The homogenizer nozzle has an inlet channel (14, 16) and an outlet channel (15, 18) and consists of a hard ceramic plate (11), in which the bore (13) is present, pressed into a steel body (12, 19). The inlet channel (14, 16) and the outlet channel (15, 18) are likewise incorporated into the steel body (12, 19).