I had bronchitis back in the winter and I drank hot buttered rum for my cough. I can't take any kind of prescription cough medicine, but that hot buttered rum was really good and it knocked out the cough.
I guess it's kind of a folk remedy, but it sure enough worked for me. It also made me drowsy enough to sleep, and stopped my coughing in the night. It was money well spent for the rum. I liked the golden rum, too. It seemed to go with the spices in the hot butter compound.