Decongestants as Phenylephrine hydrochloride, may be taken orally or as a nasal spray to reduce the secretions and swelling of the lining of the nose by constricting the blood vessels in the nose. Anti-inflammatories as Sodium cromoglycate, block the inflammatory pathways that cause the symptoms of perennial rhinitis, however, they have not been found to be more effective than corticosteroids or antihistamines.