The treatment of seasonal allergic rhinitis with a 2% aqueous solution of sodium cromoglycate delivered by a metered dose nasal spray.

A double-blind, group comparative trial of 2% aqueous solution of sodium cromoglycate in seasonal allergic rhinitis (hay fever) is reported. All twenty-five patients in the active group found the treatment a success whereas fourteen out of nineteen in the placebo group regarded this as a failure. The method of application (metered dose spray) was acceptable to all patients.