Mucosolvan is used for infections of the upper respiratory tract. It clears airways and eases cough. Preclinically, ambroxol, the active ingredient of MUCOSOLVAN, has been shown to increase respiratory tract secretion. It enhances pulmonary surfactant production and stimulates ciliary activity. These actions result in improved mucus flow and transport (mucociliary clearance). Improvement of mucociliary clearance has been shown in clinical pharmacologic studies. Enhancement of fluid secretion and mucociliary clearance facilitates expectoration and eases cough.