A method of manufacturing a special extract from Shinfitsumu, providing a suspension system derived from Shinfitsumu, comprising the steps of fractional precipitation of mucopolysaccharides in the suspension system, the fractional precipitation the polymer mucopolysaccharides in the suspension system in and out the first fractional sticky precipitate obtained as the first precipitate was separated extraction residue is the first precipitate, and raffinate and obtaining a first extraction phase is obtained by performing a second fractional sticky precipitate from the first extract phase of low molecular mucopolysaccharide as a second precipitate, said second precipitate were separated, and a to obtain a second extract phase, a step, a step of selectively removing the pyrrolizidine alkaloids from said second precipitate and / or the second extraction phase, said first 2 precipitate, the second as specifically removed pyrrolizidine alkaloids Precipitate, and the second extraction phase, in particular combined the second extract phase to remove the pyrrolizidine alkaloids, the the steps of a special extract, at least one of, in particular, those steps of including all, the production method.