Azithromycin Side Effects: I was prescribed Zpac antibiotic (zithromax), for bronchitis, cu http://www.medications.com/effect/view/23904 I was prescribed Zpac antibiotic (zithromax), for bronchitis, cured the bronchitis, then gave me Guillain-Barre, which can be fatal My husband was prescribed Azithromycin Paks not once, but twice f Sat, 23 Feb 2008 19:11:03 -0500 http://www.medications.com/effect/view/23904?item=5071 My husband was prescribed Azithromycin Paks not once, but twice for Bronchitis and it also cleared up the bronchitis, but left him with severe abdominal pain and the inability to walk or use his upper body muscles. He also complained of knee joint pain. http://www.medications.com/effect/view/23904?item=5071