The aim of the study was to assess therapeutic efficacy. tolerance and safety of biologically active additives. This biologically active additives was used as an immunostimulant in complex treatment for acute respiratory diseases in 86 children at the age from 6 to 14 years. who suffer frequently and durably against the background with concomitant infectious and physical abnormality. https://herbsdailyes.shop/product-category/dl-phenylalanine/