Dose Infection Sinus Sinus Infection Zithromax Dose Zithromax Sinus contamination Zithromax Dose Shanellehtyuihtyuerr Kamis, 03 Mei 2018 Zithromax dosage for sinus infection medhelp. I've been unwell for over 5 weeks and was in the end identified with a sinus infection. Th...