A blocked nose often occurs with a cold, this causes excessive nasal secretions and the swelling of many tiny blood vessels that line the nose. The air passages become narrower and the nasal secretions may block the nose completely, leaving your little one feeling blocked up and congested. Otrivine Congestion Relief 0. 1% 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 secretion for up to ten hours. Key features of Otrivine Congestion Relief 0. 1% Nasal Spray Easy to use nasal spray Helps to reduce nasal mucus Instant relief for blocked noses, symptoms of allergies and sinusitis Could provide up to 10 hours of relief Starts to work in as little time as 2 minutes With Menthol. Please note that results may vary.