What cold medicine can my 6 year old child take while taking dispersal?

I rarely recommend any OTC Cold remedies beyond a mucus releasing agent like Robatussin. The combination agents provide little or no benefit to kids that age beyond giving a parent something to do. Teir use came int disfavor decades ago after data showing an excess of ER visits from overdoses. Good hydration/nutrition and rest are the mainstay of management.

Nasal saline spray is often effective in reducing the symptoms of a cold. I agree hydration and rest are helpful and that most colds resolve within 10 days Watch for signs of shortness of breath and fever.