Zithromax is used for treating mild to moderate infections caused by certain bacteria. It may also be used alone or with other medicines to treat or prevent certain infections in persons with advanced HIV infection. Zithromax is a macrolide antibiotic. It slows the growth of, or sometimes kills, sensitive bacteria by reducing the production of important proteins needed by the bacteria to survive.
Use Zithromax as directed by your doctor.
- Take Zithromax by mouth with or without food. If stomach upset occurs, take with food to reduce stomach irritation.
- Do not take an antacid that has aluminum or magnesium in it within 1 hour before or 2 hours after you take Zithromax.
- Zithromax works best if it is taken at the same time each day.
- To clear up your infection completely, use Zithromax for the full course of treatment. Keep using it even if you feel better in a few days.
- If you miss a dose of Zithromax, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use Zithromax.
All medicines may cause side effects, but many people have no, or minor, side effects.
Check with your doctor if any of these most common side effects persist or become bothersome:
Diarrhea; headache; loose stools; nausea; stomach pain; upset stomach; vomiting.
Seek medical attention right away if any of these severe side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); bloody stools; changes in hearing or hearing loss; chest pain; eye or vision problems; irregular heartbeat; muscle weakness; pounding in the chest; red, swollen, blistered, or peeling skin; ringing in the ears; seizure; severe diarrhea; stomach cramps/pain; trouble speaking or swallowing; yellowing of the skin or eyes.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.