Is azelastine a steroid or antihistamine?

Azelastine is an antihistamine. It's not a steroid. It works by blocking the effects of histamine, a chemical in your body that causes common allergy symptoms such as sneezing and runny nose. Azelastine is available over the counter as a nasal spray. It's also available as both a nasal spray and an eye drop with a prescription. View original source