Can a Simple Allergy Spray Help Prevent COVID-19?

Could a common nasal spray you find in your medicine cabinet help protect against COVID-19? A 2025 randomized clinical trial published in JAMA Internal Medicine tested the allergy spray azelastine—typically used for seasonal allergies—to see if it could reduce the risk of coronavirus infections. In this video, we break down the study’s findings from Germany, where 450 healthy adults used either azelastine or a placebo nasal spray three times a day for two months. The results? A 69% lower COVID infection rate in the azelastine group, plus fewer symptoms, shorter illness, and even protection against the common cold. Is this a new tool in the fight against COVID-19? Watch to find out what the research says and how it might apply to your health routine—especially during virus season. 👉 Like and follow Science My Health for more clear, fast, and science-based health updates.