Collected Larix decidua barks were cleaned to remove unwanted materials such as moss and soil particles, and the crude extract was prepared by maceration of 70 g bark powder in 1 l ethyl acetate (EtOAc) at room temperature for 24 under magnetic stirring. After filtration under vacuum on a 40 µm sintered glass, the solvent was evaporated under vacuum to leave a dry EtOAc extract. The extraction of Larix decidua bark by EtOAc yielded 4.34 g (6.2 %) of crude extract.