Otrivine Adult Nasal Drops Lasts up to 10 hours. Decongestant. WORKS FAST. Otrivine Adult 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. Otrivine is a registered trade mark. - Prepare and Use: Directions: (For full instructions see enclosed leaflet). Dosage for Adults and Children over 12 years: 2 or 3 drops of solution in each nostril 2 or 3 times daily. Should not be used for infants or children under 12 years. 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. If you are pregnant or taking other medicines or are under a doctor's care consult him before using Otrivine. Do not use continuously for more than seven days. If symptoms persist consult your doctor. Warning: Do not exceed the stated dose. Sealed cap. Do not use if seal is absent or broken