A Z-Pak is a five-day course of the antibiotic Zithromax (azithromycin) distributed in a blister pack. A Z-Pak contains six 250 mg tablets. Take two tablets the first day and one tablet a day for ...

A doctor may prescribe azithromycin (Zithromax), also known as Z-Pack, to help treat a sinus infection caused by one of the following bacterial infections: Haemophilus influenza Moraxella ...