Rheological properties of the polymer and polymer:IND extrudates were characterized using a Discovery Hybrid Rheometer HR-2 (TA Instruments, USA) equipped with an Environmental Test Chamber (ETC), as well as with an air chiller system. The ETC is a high temperature oven that provides uniform and stable temperature during the measurements. The samples were prepared in a hot air oven (Hewlett Packard HP 5890 Series, Gas Chromatograph, Agilent Technologies, USA) using in-house teflon molds with diameter of 25 mm. A plate-plate setup and an upper 25 mm plate used for all the measurements. The behaviour of the prepared samples was tested for 5 h under constant dynamic-mechanical low-shear conditions. The frequency was set to 10 rad s -1 and the shear strain to 1%. In the same measurement, the behaviour of the complex viscosity during isothermal heating was observed. The temperature of the measurements was changed depending on the drug loading, to have similar temperatures as MEW printing procedure. Data was analysed using the Origin software.