Delsym cough syrup works.
I am forever indebted to the fellow mom who shared this secret with me in the church nursery over a year ago when we were both explaining that our kids had colds a week or so ago, but the cough was still hanging on, but they weren't really still sick.
My one complaint is that because it's a 12-hour suppressant, you have to make sure you're on the right dosing schedule (7am and 7pm works for me) to get maximum benefit at nighttime and daytime. We've tried everything, and this really seems to not only quiet the cough, but prevent it from getting so deep in the chest.
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