New nasal spray could help teens breathe easier
Disease control
Completed
This study tests a nasal spray called OPN-375 in about 72 teenagers (ages 12-17) who have nasal polyps—growths inside the nose that cause stuffiness and breathing trouble. The spray is given twice a day for 16 weeks, and some participants receive a placebo (inactive spray) for co…
Phase 3 • Sponsor: Optinose US Inc. • Aim: Disease control
Last updated Sep 20, 2026 00:00 UTC