Natural Factors Lung, Bronchial & Sinus Health contains tested herbs and nutrients that help soothe irritated airways, thin mucus, and loosen phlegm to improve breathing and calm coughs. This non-drowsy formula enhances lung and bronchial function and supports sinus health.
 
Helps relieve the symptoms of chronic bronchitis 
Helps relieve and soothe coughs
Features N-acetyl-cysteine (NAC), marshmallow, and ivy leaf extracts