What is a Z-Pac?

Zithromax Z-Pak is an American brand name for azithromycin, an oral antibiotic medication. According to Mayo Clinic, azithromycin is a macrolide antibiotic, meaning it kills bacteria and prevents additional growth.

According to Drugs, azithromycin is used to treat bacterial infections, such as respiratory, skin and ear infections, as well as sexually transmitted diseases. People with histories of liver or kidney disease, myasthenia gravis, heart rhythm disorder or long QT syndrome should tell their doctors about these conditions before taking azithromycin. Severe allergic reactions may occur with some people, who should seek emergency medical attention. Common side effects include diarrhea, stomach pain, dizziness and vaginal itching.