Imodium (loperamide) produced by Chemical Works of Gedeon Richter, Budapest, is a useful preparation for the symptomatic treatment of both acute and chronic diarrhoea of various etiologies. 2. In chronic diarrhoea cases the best results were obtained in the treatment of functional disorders of the guts. 3. Side effects occurred only in few patients and with low intensity, the treatment had to be interrupted in none of the cases.