[A pharmacodynamic investigation of the effect of polyholozidic substances extracted from Plantago sp. on the digestive tract].

From the leaves and seeds of some Plantago species (Plantago major, media, lanceolata) the polyholozidic fraction was separated. A statistically significant gastroprotective action was found both in the case of the polyholozide obtained from seeds and leaves in two experimental models. At higher doses a laxative action was also obtained.