Testing seawater nasal sprays for sinus and nose symptoms

This trial is testing four different seawater-based nasal sprays (Respimer® Hygiene-Prevention, Respimer® Decongestion, and Phytosun arôms® Hypertonic nasal wash) to understand how well they work in real life. The study will track how effective these sprays are at relieving sinus and nasal symptoms, how safe they are, how easy they are to use, and how satisfied people are with them. The goal is to gather practical information about whether these treatments help people manage conditions like allergies, chronic sinusitis, congestion, and post-surgery nasal symptoms.

Millions of people struggle with congestion, sinus problems, and nasal breathing difficulties, and doctors often recommend nasal sprays as part of routine care. This trial exists to see how well these particular seawater-based sprays actually work outside of a laboratory setting—in everyday life—so we can better understand which ones help patients most and are safest for different age groups.