The aim of the work is to determine the factors of the course of GERD in children and adolescents which are important for predicting the development of magnesium deficiency. Materials and methods of research. For the study 77 people aged 9 to 14 years. who have gastroesophageal reflux disease with endoscopically positive diagnostic result. https://parisnaturalfoodes.shop/product-category/horehound/