Abstract
LM 209 is a new product of antihistamine to treat allergic diseases. We investi-gated the antiallergic activity of LM 209 for allergic rhinitis, using 24 patients appeared in the ENT clinic of Kyoto University Hospital and Nagahama Red Cross Hospital from Spring to July, 1982. This drug was given to each patient for 3 weeks continuously. The results obtained were as follows.
1) The effectiveness for sneezing, watery rhinorrhea and nasal obstruction was 79.2, 66.7 and 33.3% respectively.
2) Overall effectiveness for allergic rhinitis was 66.7%, including seasonal and perennial types.
3) The side effect of drowsiness and tiredness was minimal, for which a long term administration was feasible.
