Lung, Bronchial & Sinus Health from Natural Factors is an all-natural supplement for respiratory support. Crafted with plant-based ingredients including wild cherry, marshmallow, mullein, horehound and ivy extracts, bromelain and N-acetyl-L-cysteine. Our formula uses botanicals and herbs traditionally used to support healthy respiratory function and oxygen flow in the lungs. Lung, Bronchial & Sinus Health is a safe and effective solution for complete respiratory care.