[Clinical evaluation of side effects during immunotherapy with Catalet T in patients with hay fever].

The aim of this study was to evaluate the frequency of side effects during specific immunotherapy with Catalet T and to compare the frequency of side effects between different groups of patients according to time of immunotherapy continuation (from 1 to 5 years). The study was carried on 100 patients aged from 12 to 58 years. The tolerance of Catalet was good. 83% of investigated patients finished the immunotherapy course with minimal or no side effects. The prevalence of side effects was the same independently from the time of immunotherapy.