The most common side effect is a bitter taste. This type of nasal spray is available over-the-counter (OTC) and as a prescription. Types of nasal antihistamine sprays include azelastine (brand ...

Monitoring for Adverse Reactions: Monitor breastfed infants of lactating women treated with azelastine HCl nasal spray for possible signs of milk rejection related to the bitter taste of azelastine.

For patients with moderate-to-severe SAR that is uncontrolled on nasal steroids alone ... be started as first-line therapy, but azelastine has a bitter taste, and two different sprays increase ...