A pharmaceutical composition for the prophylaxis and treatment of infectious and non-infectious diarrhoea comprises medical hydrolysed lignin and living cells of the yeast strain Saccharomyces boulardii in the amaound of 10 9 - 5* 10 10 of living yeast cells to 1 gram of hydrolysed lignin. Preferably, the composition is prepared by uniformly mixing a lyophilized powder of living cells, i.e. cells in an anabiotic state, of the yeast strain Saccharomyces boulardii with powdered medical lignin. This drug (pharmaceutical composition) I proposed preferably as a general remedy for diarrhoea occurring during travel, when it is difficult to make a diagnosis and establish the cause of intestinal upset and an effective drug is urgently required, before consultation with a doctor, which will have a sorbing and marked antimicrobial antiviral effect, as well as a normalizing effect on intestinal motor function. Furthermore, the range of diarrhoeal causative agents that can be suppressed is increased, and discrepancies are reduced and treatment times are shortened with respect to other diverse causative agents of bacterial food poisoning.
