1 Division of Allergy and the Department of Medicine, University of Washigton School of Medicine, Seattle
Exercise-induced asthma was used to demonstrate that a xanthone, a new orally active cromolynlike drug, has significant activity in man. The effect of a single oral dose of 8 mg/kg was studied in a double-blind cross-over fashion at two and five hours after administration, with significant inhibition of post-exercise bronchopasm being seen at five hours. Further study seems indicated to determine optimal dosage and clinical effectiveness.