Azithromycin is a macrolide antibiotic that treats many bacterial infections. It stays in the body for a long time, so courses are often short, such as three to five days.
What Is Azithromycin Used For?
- Chest infections such as bronchitis and pneumonia
- Throat, sinus, and ear infections
- Skin infections
- Some infections of the genital tract, such as chlamydia
- Typhoid fever, when a doctor prescribes it
How Does Azithromycin Work?
Azithromycin stops bacteria from making the proteins they need to grow. The bacteria cannot multiply, and your immune system clears them. It does not work against viruses.
General Dosage Information
This is general information only. Your doctor sets the right dose for you, so follow your prescription and the label.
- A common adult course is 500 mg on day one, then 250 mg once daily for four more days. Some infections need 500 mg once daily for three days.
- Doctors dose children by weight.
- Finish the course, even if you feel better.
Side Effects of Azithromycin
Common Side Effects
- Diarrhea
- Nausea and vomiting
- Stomach pain
- Headache
Serious Side Effects
Call your doctor or get emergency help if you notice:
- Fast, pounding, or irregular heartbeat, or fainting
- Yellow skin or eyes, or dark urine
- Severe or bloody diarrhea
- Swelling of the face or trouble breathing
Who Should Be Cautious?
- People with heart rhythm problems or low potassium or magnesium
- People with liver or kidney disease
- People with myasthenia gravis
- Pregnant or breastfeeding women should ask their doctor
Drug Interactions
Tell your doctor and pharmacist about every medicine and supplement you take. Examples of important interactions include:
- Antacids with aluminum or magnesium: take azithromycin at least two hours apart.
- Warfarin: it can raise the risk of bleeding.
- Medicines that affect heart rhythm, such as amiodarone: together they raise the risk of dangerous rhythm problems.
- Digoxin and cyclosporine: azithromycin can raise their levels.
Storage and Precautions
- Store it at room temperature, away from heat, light, and moisture.
- Keep it out of the reach of children.
Frequently Asked Questions
Can I take it with food?
Yes. Food can reduce stomach upset.
How soon will it work?
Many people feel better in two to three days, but finish the course.
Will it treat a cold?
No. Colds are caused by viruses.
Disclaimer: This article is for information only. It is not medical advice. Please talk to your doctor about your own health.