The most likely cause of your son's cough is a post-viral wheeze. This can take 3 to 4 weeks or longer to clear. Allecet is for nasal allergy and will not help your son's cough. Singulair may help a bit, but works best as an asthma treatment.He probably needs a brochodilator such as Ventolin preferably given using a spacer with a face mask and used at least twice daily.
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