Hi, a month ago one by one the members of my family started with cough without phlem, my daugther 4yo was the first it lasted almost 3 weeks, then my wife now it is my turn, along with grandpa and grandma. My daugther was ok for a week but she is waking up coughing several times during the night. We have tried proxenex, singulair, mucinex and plenty of liquids.