What are the major symptoms of bronchitis and how it can be cured naturally?

Your body does that: Cough is predominant symptom and vast majority of bronchitis is caused by viral infections and will resolve on its own with or without treatment. Typical course is 7-10 days, but the cough may linger for several wks. If no fever, or nasty/colored sputum, and symptoms are improving, no treatment needed--your body takes care of that. Otc cough syrup/mucinex may help. Consult doc. Good luck.