Drugs which relieve nasal congestion and stuffiness. They may be given orally or by nasal spray, and most are SYMPATHOMIMETIC DRUGS which cause vasoconstriction in the nasal mucosa. Too frequent use reduces their effectiveness, and there is a danger of ‘rebound’ worsening if they are used for more than 10–14 days. A safer option for babies is simple sodium chloride drops. Warm moist air is also a traditional and effective decongestant.