Otrivine allergy relief 01 nasal spray provides relief from the symptoms of nasal congestion due to colds sinusitis and allergies such as hay fever each application delivers a measured dose which works within minutes to clear a blocked nose and relieve excessive nasal secretions for up to ten hours as an alternative doctors can also prescribe medication that can assist with your hayfever please visit our online doctor service to proceed with an hayfever consultation our uk registered