<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>The calcium salt form of nedocromil, a pyranoquinolone derivative with anti-inflammatory properties. Nedocromil inhibits the activation and release of inflammatory mediators (leukotrienes, histamine and prostaglandins) from a variety of cells involved in hypersensitivity reactions, including mast cells, eosinophils, neutrophils, macrophages, monocytes and platelets. As a result, nedocromil sodium inhibits both immediate and late bronchoconstriction, decreases bronchial hyperresponsiveness and inhibits recruitment of other inflammatory cells into the airway epithelium.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>