Due to its chemical properties, budesonide mainly acts in the mucous membrane of the esophagus and has little effect on the whole body. Therefore, the classic side effects of corticosteroids have only been observed with a significantly lower frequency and not with the same intensity. As with any therapy, however, side effects can also occur with treatment with budesonide. Therefore, during the study you are closely monitored so that any side effects that may occur can be treated quickly.