Inflammation of the bronchial tubes or bronchi. Inflammation may be caused by virus, bacteria, smoking or the inhalation of chemical pollutants or dust. Acute or chronic bronchitis. Bronchial wall inflammation can occur in asthma, shortness of breath, spasmodic contraction and much production of mucopurulent sputum, frequent attacks on bronchitis may lead to emphysema. Cold attacks, capillary bronchitis and bronchorrhoea. BM 165 BRONCHITIS helps to reduce inflammation and regulate the contraction of bronchial tubes, relieving airway obstruction and restoring healthy breathing.