Brief Answer:
Steam inhalation would be greatly beneficial.

Detailed Answer:
Thanks for asking on HealthcareMagic.

I have gone carefully through the details and understand your concern. Most often such symptoms are due to viral infections. I would not recommend use of Nyquil (in both children and adults) as it contains dextromethorphan, a cough suppressant. What needs to be given is a mucolytic instead. You may give her cetirizine syrup once daily for the next few days. Give steam inhalation to your grandchild. It helps in reducing the congestion. Water vapor will reach deep inside and would help in diluting the cough and thus would provide relief.

You need to be patient. Irrespective of treatment it usually takes 3-7 days to resolve.

Hopefully that would help. Feel free to write back in case of further queries.

Regards

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Brief Answer:
Clinical evaluation would help.

Detailed Answer:
Thanks for writing back.

Two weeks of cough is unusual and calls for a clinical examination. The possibility of superadded infections needs to be evaluated. Cetirizine is an antiallergic. It helps since an allergic component is usually associated. Montek LC Kid (montelukast + levocetirizine) works even better but is a prescription medicine. Mucinex is a mucolytic and should help (it acts in direction reverse to that of dextromethorphan).

I understand that excessive coughing can trigger vomiting. Steam inhalation would help. Please do not panic.

Feel free to write back.

Regards

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