Can you tell me how long does a z-pak take to work for bronchitis?

Bacterial: Antibiotics are indicated for bronchitis that is caused by bacteria. A common antibiotic known as zithromax or z-pack generally can lead to symptom improvement within 48-72 hours after initial dose but sometimes even longer than that.

Bronchitis Tx.: 95% of the time, acute bronchitis is a viral infection, so the mainstay of treatment would be steroids, usually taken in pill form. For the minority of cases that could be bacterial, we tend to add in an antibiotic, like Zithromax or Levaquin, (levofloxacin) to be complete. However, the steroid is the real mandatory part of the treatment,