Astepro is not a steroid. It is an antihistamine nasal spray containing the active ingredient azelastine hydrochloride. This is a common point of confusion because many popular nasal sprays for allergies, like Flonase and Nasacort, are corticosteroids. Astepro works through a completely different mechanism.
How Astepro Works
Azelastine, the drug in Astepro, is classified as an H1-receptor antagonist. That means it blocks histamine, the chemical your body releases during an allergic reaction that causes sneezing, itching, and a runny nose. This is the same basic approach as oral antihistamines like cetirizine (Zyrtec) or loratadine (Claritin), but delivered directly to the nasal lining.
Beyond blocking histamine, azelastine has broader anti-inflammatory effects. It interferes with several other chemical signals involved in allergic reactions, including leukotrienes and cytokines. These additional actions help explain why it can be effective for people whose symptoms don’t respond well to oral antihistamines alone.
How It Differs From Steroid Nasal Sprays
Steroid nasal sprays like fluticasone (Flonase) and triamcinolone (Nasacort) reduce inflammation by suppressing your immune system’s response in the nasal passages. They’re effective, but they typically take several days of consistent use before you feel the full benefit. Some people also worry about long-term steroid use, even though nasal steroids deliver very low doses compared to oral steroids.
Astepro works faster. Studies show its onset of action is within 30 minutes, which makes it useful when you need quick relief. Research comparing azelastine to fluticasone has found comparable effectiveness for allergy symptoms, with azelastine offering a faster onset and a favorable safety profile. Because it’s not a steroid, it doesn’t carry the same concerns about prolonged corticosteroid exposure.
What Astepro Treats
Astepro is approved for both seasonal and perennial allergic rhinitis. Seasonal allergies flare during specific times of year (pollen season, for example), while perennial allergies persist year-round from triggers like dust mites or pet dander. Azelastine is also the only prescription antihistamine that has been approved in the U.S. for vasomotor rhinitis, a non-allergic form of chronic nasal congestion and runny nose that isn’t triggered by allergens at all. This makes it a versatile option for people who aren’t sure whether their symptoms are truly allergy-related.
OTC Availability
In June 2021, the FDA approved Astepro for over-the-counter sale for adults and children six years of age and older. Before that switch, azelastine nasal spray was only available by prescription. You can now find it on pharmacy shelves alongside steroid sprays and oral antihistamines.
The standard dosing for adults and children 12 and older is one or two sprays in each nostril twice daily. Children ages 2 to 11 typically use one spray in each nostril twice daily, and children as young as 6 months may use it for perennial allergies at the same frequency. Always check the product label for the specific formulation you’re buying, since dosing can vary.
Common Side Effects
The most well-known side effect of Astepro is a bitter taste in the mouth shortly after spraying. This happens because some of the spray can drip down the back of your throat. Tilting your head slightly forward while spraying and avoiding sniffing hard afterward can help minimize it.
Drowsiness is another possibility. Unlike most oral second-generation antihistamines (like cetirizine or loratadine), azelastine can cause noticeable sleepiness in some people. Drinking alcohol while using Astepro can make this effect worse, so it’s worth being cautious, especially the first few times you use it, until you know how it affects you.
Using Astepro With Steroid Sprays
Some people use both Astepro and a steroid nasal spray together for stubborn allergy symptoms. This combination targets inflammation through two different pathways: histamine blockade and immune suppression. In fact, there’s a prescription product called Dymista that combines azelastine and fluticasone in a single spray for exactly this reason. If one type of spray alone isn’t controlling your symptoms, adding the other can provide more complete relief than either one by itself.