Bronchitis is an inflammation of the bronchial tubes, which are the airways that carry air to and from your lungs. It typically causes symptoms like coughing, wheezing, chest discomfort, and production of mucus. There are two main types of bronchitis: Acute Bronchitis and Chronic Bronchitis. Acute bronchitis requires immediate medical attention. Dietary supplement is mainly recommended to those with chronic bronchitis.