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.