Quest Vitamins LTD,
An Inflammation of the bronchial tubes, bronchitis causes passages to become progressively more clogged, intensifying irritation. This causes a productive Cough, characteristic to bronchitis. Smokers constitute 75 percent of chronic bronchitis cases, and there is no doubt Smoking is the chief cause of the condition.
Acute bronchitis usually lasts about ten days. If bronchitis lasts for three or more months, chronic bronchitis has developed. Excessive bronchial mucous secretions are common, producing a chronic or recurrent Cough.
1. Hunt C, Chakravorty NK, Annan G, et al. The clinical effects of Vitamin C supplementation in elderly hospitalised patients with acute respiratory Infections. Int J Vitam Nutr Res 1994;64:212-19.