Doctors may prescribe azithromycin, or Z-Pack, to treat strep throat in people allergic to penicillin or other first-line antibiotics. Side effects may include nausea, headaches, and diarrhea. Strep ...
Azithromycin dosing varies based on the specific bacterial infection being treated, with most adults taking between 500 mg and 2,000 mg depending on whether it’s a single dose or a multi-day regimen.