Intranasal corticosteroids are the most potent and effective agents for the treatment of AR; they are recommended as first-line agents for moderate/severe or persistent AR. These agents effectively reduce inflammation of the nasal mucosa and improve mucosal pathology through their anti-inflammatory mechanism of action.

How long does it take for intranasal corticosteroids to work?

Intranasal corticosteroids take time to work. They may begin to give relief to allergy symptoms after about six to 10 hours, but full relief may not be obtained for three to six weeks with daily use.

How long can my patient use intranasal steroid sprays?

If you've bought a steroid nasal spray from a pharmacy or shop, stop using it when you think you no longer need it. Do not use it continuously for more than a month without speaking to a doctor. If you're taking a prescription spray, do not stop using it unless the doctor advises you to do so.