Chlorpheniramine / hydrocodone
"Best cough syrup in the world for bronchitis and asthma.  I measured and too it as prescribed for 7 days once a day and didn't get high or addicted.  Works better than that trash promethazine cough syrup.  The government has cracked down so hard on Drs they're scared to help you with what you really need.  This cough mixture deserves a 10 or more like a 100! I stopped coughing in 5 minutes and felt better period.  No tight chest although on antibiotics.  This is what I'd recommend to any suffering like me ."