 [ Symptoms ] chronic mucus head cold symptoms since 12016 [ Disease ] sorry to hear that it seems 2015 and 2016 are not your lucky years i do not see any drugs that cause those side effects but it could be a general decrease in your immunity and lung capacity that may be causing a chronic sinusitis or bronchitis secondary to a caught cold try simple nasal lavage with sakt water and black sea water and breathing exercises coughing and spirometer techniques omega3 and multivitamin and vitamin c are as you know fighters for your chronic case