I know this question is several years old, however this answer may help someone else dealing with this in the future. My 8 year had a bad cough from Bronchitis. Treated with antibiotics, Albuterol, pulmicort, prednisone, dexamethasone, Vicks vapor rub, warm mist humidifier, steam showers, honey, hot tea, Flonase, Zyrtec, air purifier, tessalon pearles, mucinex, pineapple juice, apple cider vinegar...everything and anything we could think of. It was every 3-4 seconds. No relief. Except at night..