When I had a bad case of bronchitis or "crud" my doctor told me to take "Mucinex" overcounter med, ingredient same as Robitussin but stronger to help liquidfy mucous so it would clear out. Have to ask pharmacist for this, they usually keep it in the back.

I was also prescribed Zithromax antibiotic and Beconase nasal spray.

The virus or whatever is causing the bronchitis problems is difficult to clear. Hang in there, cough usually lasts 3-4 weeks. I had to take a second round of antibiotic.