Abstract: Described is a laxative on the basis of a pulverized composition, which contains in addition to plantago seed (Plantaginis ovatae semen) and/or plantago seed husks at least an anthranoid compound having a purgative effect, at least a sennoside, preferably in the form of anthranoid or sennoside-containing plants (or constituent parts thereof), in addition to at least one polygalactomannan-based polysaccharide or a derivative thereof. The polygalactomannan-based polysaccharide or a derivative thereof acts on the one hand as a (co)stabilizer in an aqueous suspension of the pulverized composition, and on the other hand also has, in particular due to its swelling capability, a synergistic effect together with the other components of the composition, wherein it supports the purgative action and facilitates at the same time the workability of the composition according to the invention, which is processed into a fine powder that can be easily dispersed in water.