11 1 methyl 4 piperidinylidene 6 11 dihydro 5h benzo 5 6 cyclohepta 1 2 b pyridine, 6 11 dihydro 11 1 methyl 4 piperidylidene 5h benzo 5 6 cyclohepta 1 2 b pyridine, azatadin
For the relief of the symptoms of upper respiratory mucosal congestion in perennial and allergic rhinitis, and for the relief of nasal congestion and eustachian t.b. congestion.