Azelastine HCl 137mcg/spray; aqueous nasal spray; contains benzalkonium chloride. Avoid engaging in hazardous occupations requiring complete mental alertness such as driving or operating machinery ...

As previously referenced, azelastine nasal spray is a prescription-only, generic allergy-relief spray (via GoodRx Health).

For patients with allergic rhinitis, twice-daily azelastine plus fluticasone cut nasal symptoms ... all treatments were administered as one spray twice daily to preserve blinding.