Previously known as Resp-free and breathe-aid, lung and bronchial formula is a combination of herbs has been used historically to help relieve irritation in the respiratory tract, lungs and bronchi. This is an aid for emphysema as well as other bronchial and lung congestions such as bronchitis, asthma, tuberculosis, croup, bronchiectasis, pleurisy, etc. Christophers Original Formulas Lung And Bronchial Formula is extremely valuable in strengthening and healing the entire respiratory tract. It promotes the clearance of mucous secretions from the bronichopulmonary passages. This makes it easier for the body to transport and distribute oxygen.