“…The most frequent type of condition that required the use of antihistamines was allergic rhinitis 13,14,15, 17-21"23,24,26,28-30,32-36,39-42,45-52,55-58 , followed by chronic idiopathic urticaria 15,20,30,35,38,42 and atopic dermatitis 25,35,37,43,44,54 . The majority of studies did not provide any evidence regarding concomitant medications and ten studies reported inclusion of patients with concomitant asthma 16,17,28,33,34,40,47,[52][53][54] . Cetirizine was administered in 22 studies 14,21,26,32,[34][35][36]38,40,45,[47][48][49][50][51][52][53][54][55][56][57][58] , loratadine in 10 studies 14,18,31,37,39,42...…”