Introduction. The article presents basic information on approaches to pathogenetic therapy of acute intestinal infections. Data from our own research on the diagnosis and treatment of gastrointestinal manifestations of COVID-19 in children aged 3 months to 18 years are presented. The aim of the study was to evaluate the effectiveness of complex rehydration, cytomucoprotective and probiotic therapy for infectious diarrhea of various etiologies, including those developing with a new coronavirus infection. Materials and methods. We analyzed data from our own observations of patients aged 3 months to 18 years with diarrhea against the background of acute intestinal infections of various etiologies (120 children), as well as with a new coronavirus infection caused by the SARS-CoV-2 virus (32 children). The children were treated in accordance with current standards and treatment recommendations. Clinical examples are presented. Results and discussion. Diarrhea was observed in 64% of patients with a new coronavirus infection. Clinical cases confirm the effectiveness of rehydration, cytomucoprotective and probiotic therapy for infectious diarrhea, regardless of the etiology, including COVID-19. Conclusions. Diarrhoea and other symptoms of gastrointestinal disorders in COVID-19 are stopped when pathogenetic therapy is recommended for patients with acute intestinal infections. © 2020, Remedium Group Ltd. All rights reserved.