Yes, Nasonex is available over the counter. The FDA approved the OTC version, sold as Nasonex 24HR Allergy, on March 17, 2022. You can buy it at pharmacies and most major retailers without a prescription. Before that date, all mometasone furoate nasal sprays required a prescription, so if you last checked a few years ago, the answer has changed.
What You’re Getting With the OTC Version
The OTC product, Nasonex 24HR Allergy, contains the same active ingredient as the original prescription Nasonex: mometasone furoate at 50 micrograms per spray. It’s a corticosteroid nasal spray, meaning it works by reducing inflammation inside your nasal passages. Unlike antihistamine pills that block your body’s reaction to allergens after the fact, steroid sprays like this one calm the swelling and irritation at the source, which is why they’re generally considered the most effective option for nasal allergy symptoms like congestion, sneezing, and a runny nose.
Note that prescription mometasone still exists for certain uses. Your doctor may prescribe mometasone nasal spray for conditions beyond simple allergies, such as nasal polyps. The OTC label is specifically approved for allergy relief.
How Quickly It Works
Nasonex is not an instant fix. In a clinical study of people with seasonal allergies, about 28% felt meaningful relief within 12 hours of their first dose, compared to 13% on placebo. The median time to at least moderate symptom relief was roughly 36 hours. By the three-day mark, 64% of users experienced moderate relief or better. So you may notice some improvement within the first day, but give it two to three days before judging whether it’s working for you. For best results during allergy season, starting it a week or two before your symptoms typically begin can help you stay ahead of the inflammation.
How to Use It Properly
If you’re opening a new bottle, or if you haven’t used it in a week, you need to prime the pump first. Point it away from your face and pump it several times until you see a fine mist. After that, you’re ready to use it normally.
When spraying, close one nostril and insert just the tip of the nozzle into the other. Aim slightly away from the center of your nose, toward the outer wall of the nostril. This matters because directing the spray toward the center (your nasal septum) over time can irritate or even damage that tissue. One spray per nostril is the standard dose for most adults, used once daily.
Common Side Effects
Clinical trials involving over 2,000 adults and adolescents give a clear picture of what to expect. The most notable side effect is nosebleeds or blood-tinged mucus, reported by 11% of users compared to 6% on placebo. This is the most common side effect that’s clearly linked to the spray itself, and it’s usually minor, just streaks of blood when you blow your nose.
Headache was reported by 26% of users, though 22% of people taking a placebo also reported headaches, so the spray’s contribution is small. Sore throat occurred in about 12% of users (versus 10% on placebo), and coughing in 7% (versus 6%). In practical terms, most people tolerate it well. If you get frequent nosebleeds, make sure you’re aiming the spray away from your septum, and consider using a saline spray beforehand to keep the tissue moist.
How It Compares to Other OTC Nasal Sprays
Nasonex 24HR joins a category that already includes Flonase (fluticasone) and Nasacort (triamcinolone), both of which switched to OTC status years earlier. All three are corticosteroid nasal sprays and work through a similar mechanism. The choice between them often comes down to personal preference, price, and which one your nose tolerates best. Some people find one formulation less drying or irritating than another.
These sprays are fundamentally different from decongestant nasal sprays like Afrin (oxymetazoline). Decongestant sprays open your nasal passages within minutes but cause rebound congestion if used for more than three consecutive days. Corticosteroid sprays like Nasonex take longer to kick in but are safe for extended seasonal use and don’t cause rebound effects. They’re also different from antihistamine nasal sprays like Astepro, which work faster but target a narrower set of symptoms.
Using It Long Term
Corticosteroid nasal sprays are generally considered safe for use throughout an allergy season. Many people use them daily for weeks or months at a time during spring or fall. The OTC label typically recommends checking with a healthcare provider if you plan to use the spray for longer than six months continuously. Long-term use at recommended doses delivers very little steroid into your bloodstream, which is why these sprays have a strong safety profile compared to oral steroids. Still, if you find yourself relying on it year-round, it’s worth having a conversation with your doctor to make sure allergies are the right explanation for your symptoms.