Otrivine Allergy Relief Nasal Spray For Up To 10 Hours Decongestion Relief 10ml Otrivine Allergy Relief Nasal Spray helps to reduce nasal congestion as well as soothing the symptoms of allergies such as hay fever. Sprayed once into each nostril, the gentle formula helps to clear a blocked nose within minutes – but its effects last for up to ten hours, so it’s ideal if you need long-lasting, all-day relief. The spray is also effective in treating nasal congestion caused by other conditions such as colds & sinusitis. Otrivine Allergy Relief Nasal Spray can be taken by adults & children over the age of 12, & can be taken up to three times each day. It contains xylometazoline hydrochloride.