What can i do to give my 5yo relief for a non productive dry cough. had for 10 days and no response to otc or asthma meds?

See Below: If your child has been sick for 10 days, he should be seen.

Antihistamines: Try Cetirizine or dextromethorphan. If you have tried these then it is time to see your doctor. Please take your child to his/her pediatrician.

Be sure your child: Is taking asthma medications (controller and rescue inhalers) as prescribed.If only taking them as needed, this will cause patient to continually cough. Your child may be suffering from allergies too. Regardless , it is time to bring your child in to see physician if you have tried meds and cough persisted this far out.