The present invention relates to preventing and/or treating urologic diseases and symptoms in humans or domestic animals. The present invention relates also to preventing and/or treating pain in the pelvic area. The invention relates to use of a heteropolysaccharide composition isolated from ligneous plants and comprising hemicelluloses, mainly glucomannans, but also xylans and pectic polysaccharides, as well as fractions, subgroups or mixtures of these, as pharmaceutical preparations, food additives and food products.