Can an Over-the-Counter mucus medicine ease chronic bronchitis?
Symptom relief
Completed
This study looked at whether taking Mucinex (guaifenesin) long-term helps adults with stable chronic bronchitis manage their symptoms. Over 12 weeks, 82 participants took the medicine and reported on their cough, mucus production, and overall satisfaction. The goal was to see if …
Phase: PHASE4 • Sponsor: American Health Research • Aim: Symptom relief
Last updated Apr 02, 2026 05:42 UTC