Azithromycin

Pronounced ah-zith-ro-MY-sin

Brand names: Zithromax

Type: Macrolide antibiotic · All Antibiotics & Infection Medicines

What Azithromycin is used for

  • Pneumonia
  • Bronchitis and sinus infections
  • Strep throat in penicillin-allergic patients
  • Certain sexually transmitted infections
  • Whooping cough

◆ Kidney note

No dose change is usually needed for kidney function.

Common side effects

  • Diarrhea
  • Nausea
  • Stomach pain
  • Headache

Important cautions

  • Can affect heart rhythm in susceptible people, especially with other rhythm-affecting medicines

How it comes

Tablets, liquid, injection (hospital), eye drops. This guide lists forms only — it never lists strengths or doses.

Related medicines — Antibiotics & Infection Medicines

Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.