Pirinase hayfever 005 nasal spray works to help relieve allergy symptoms for up to 24 hours whilst also helping to prevent the return of symptoms during the day pirinase hayfever 005 nasal spray has a direct action to relieve symptoms where they start and is non drowsy can be used to treat and prevent airborne allergies including pollen hayfever pet hair dust mite and mould spores whilst also relieving nasal congestion as an alternative doctors can also prescribe medication that