ABSTRACT
The authors present an account on the therapeutic effect of Hylak drops of Merckle Co. in patients with irritable bowel syndrome. They assume that in the pathophysiological mechanism of the disease an important part is played by intestinal dysmicrobia. After two weeks' administration Hylak, 3 x 40 drops, they recorded in 20 patients with the exception of one female patient (where ex post lactose intolerance was revealed which is a contraindication of this treatment), partial or complete regression of subjective complaints in particular as regards intestinal discomfort and the number of imperative bowel movements. As to objective indicators, they proved changes in the pH of faeces and qualitative as well as quantitative changes of the microbial spectrum in faeces.