AAAAI: New Antihistamine Nasal Spray Works and Tastes Better. MedPage Today.
Patanase was approved by the FDA in April, 2008.
Patanase (olopatadine) is currently the only nasal spray to provide relief in 30 minutes in allergic rhinitis. The effect lasts for 12 hours.
Reference:
FDA Approvals: Patanase, Actonel, Cimzia. Medscape, 2008.
Olopatadine 0.6% nasal spray better than placebo for allergic rhinitis in children http://goo.gl/G4AYy - Is it better than nasal steroids?