Hi, I have a persistent cough. I used pro-air twice tonight, so 4 puffs total. I now took delsym and a cough drop, ricola. I m still coughing - dry cough. Nose is runny, but cough is non-productive. I have prescription codein with promethazine cough syrup but was hesitant to take it because I don t want to wake up groggy. Can I take it now, or will it be too much in combination with what i already took? Thanks!