Regarding the azelastine nasal spray study for COVID-19 prevention: The recent trial showing azelastine's potential in reducing COVID-19 and rhinovirus infections is indeed promising, though as a single-center study, further research is warranted. Common side effects include a bitter taste, nasal discomfort, nosebleeds, headache, and fatigue. Drowsiness is another notable concern. While azelastine has established safety for long-term allergy use, the trial's three-times-daily regimen exceeds the standard twice-daily dosing. We need additional data on such intensive use patterns. Until then, I recommend following label instructions unless otherwise directed by your healthcare provider. Certain individuals should approach with caution: those who require full alertness (as drowsiness may occur, especially when combined with alcohol or other CNS depressants), and pregnant or breastfeeding women, who were not included in the trial. Also important: never share nasal spray bottles. This spray cannot replace COVID vaccination. Consider it a potential additional protective measure, not a substitute for staying current with CDC-recommended vaccinations. If you're interested in trying it, look for azelastine products like Astepro, carefully read the OTC label, and consult your clinician—particularly if considering the trial's three-times-daily protocol rather than standard dosing. Remember to maintain your comprehensive protection strategy, including vaccinations, proper ventilation, masks when appropriate, and good hygiene practices. This commentary is intended for informational purposes and should not replace consultation with your healthcare provider.
From my experience as a clinician azelastine nasal spray is generally well tolerated but some people do report mild side effects like bitter taste, nasal irritation or occasional drowsiness. With long term use the risks are low but you should monitor for ongoing nasal dryness or irritation especially if you have sensitive sinus passages. Those who should be more cautious are people with underlying respiratory conditions, those who get nosebleeds or anyone taking multiple allergy meds as interactions can increase drowsiness. Also remember that while the study results are encouraging this spray cannot replace COVID vaccinations its best used as a complementary measure not a substitute. If you are considering trying it the safest step is to talk to your primary care physician or pharmacist first. They can help you weigh the benefits, assess your medical history and make sure its used as part of a bigger prevention plan.
Every treatment has groups that require closer attention. Children, older adults, and people with liver conditions should be cautious with azelastine spray. These groups may process the medication differently, increasing the risk of side effects. Awareness and careful monitoring are the best ways to prevent unwanted reactions. Patients in sensitive groups should discuss their health history with a physician before starting the spray. It is important to avoid self-prescribing, even for medications that seem routine. Consulting a doctor provides guidance tailored to individual needs. Following professional advice reduces risks for vulnerable populations and supports better overall health outcomes. Being cautious does not mean avoiding treatment but using it wisely and responsibly.
I am answering your question: "Are there any risks with prolonged use of this medication?" As President of Home Care Providers I have seen how medication safety plays a critical role in ensuring the safety of the patients we care for. Prolonged use of azelastine nasal spray is not without risks, however, aside from the typical bitter taste or mild irritation. Over time, the spray dries out the nasal lining which weakens the body's natural defense system. Small cracks can form, which decreases the ability to filter out particles and makes patients more susceptible to secondary infections that may need further treatment. Another risk is from the combination of azelastine with other types of medications such as oral antihistamines or decongestants. This often causes excessive sleepiness or dangerous reactions with heart rhythm and blood pressure treatments. For those with chronic sinus problems, asthma or heart concerns, the safest approach is to only use the spray under the supervision of a doctor and with regular follow-up.