Otrivine adult child nasal drops otrivine adult child nasal drops is an effective decongestant which acts gently to clear a blocked nose within minutes and relieve excessive nasal secretions for up to ten hours useful for colds hay fever and sinusitis for reasons of hygiene do not use this bottle more than 28 days after first opening it each otrivine pack should be used by one person only to prevent any cross infection children drop dosage for children aged 6 12 year