Your son almost certainly has a problem with mucous running back down his throat from his nose which is known as a 'post nasal drip'.This post nasal mucous drip causes him to cough in this way. You should concentrate on getting his nose clear.Use a saline nasal spray such as Sterimar twice daily to clear his nose. Continue giving him the Brochoped. If he is still coughing in 10 day's time he should be checked by a doctor.
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