Leukotriene modifiers work by blocking the action of leukotrienes, one cause of the inflammation and nasal congestion associated with allergies. For those with allergies and asthma, leukotriene modifiers help keep bronchial tubes, airways to your lungs, from constricting.
This depends on your weight in KG. You should speak to your doctor about dosages.
Otitis media
Infection of the middle ear and also has manifestations in the respiratory system(ear nose and throat system is connected)hence causing the cough and slight running nose