Abstract
Disodium chromoglycate (DSCG) is well documented in the topical treatment of allergic rhintitis. Its use does not lead to any major side effects. FPL 57579 is a new chromone compound which is well absorbed after oral administration. In a clinical trial, patients with allergic rhinitis underwent a nasal challenge before and after ingestion of FPL 57579. The effect on nasal airway resistance (NAR) was determined by rhinomanometry. In all cases there was a smaller increase in NAR after the intake of FPL 57579.