Medication Guide App

Zithromax

Pronunciation

Generic Name: azithromycin (a ZITH roe MYE sin)
Brand Names: Azithromycin 3 Day Dose Pack, Azithromycin 5 Day Dose Pack, Zithromax, Zmax

What is Zithromax?

Zithromax (azithromycin) is an antibiotic that fights bacteria.

Zithromax is used to treat many different types of infections caused by bacteria, such as respiratory infections, skin infections, ear infections, and sexually transmitted diseases.

Zithromax may also be used for purposes not listed in this medication guide.

Important information

You should not use Zithromax if you have ever had jaundice or liver problems caused by taking azithromycin.

Slideshow: Is it Safe to Give Human Medicine to Pets?

Always get your pet's drug and dose recommendation from the veterinarian.

Before taking this medicine

You should not use Zithromax if you are allergic to azithromycin or to similar drugs such as clarithromycin, erythromycin, or telithromycin.

To make sure Zithromax is safe for you, tell your doctor if you have:

  • liver disease;

  • kidney disease;

  • myasthenia gravis;

  • a heart rhythm disorder; or

  • a history of Long QT syndrome.

FDA pregnancy category B. Zithromax is not expected to be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

See also: Pregnancy and breastfeeding warnings (in more detail)

It is not known whether azithromycin passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.

Do not give Zithromax to a child younger than 6 months old.

Older adults may be more likely to have side effects on heart rhythm, including a life-threatening fast heart rate.

How should I take Zithromax?

Take Zithromax exactly as prescribed by your doctor. Follow all directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended. The dose and length of treatment with Zithromax may not be the same for every type of infection.

To use the Zithromax oral suspension single dose packet: Open the packet and pour the medicine into 2 ounces of water. Stir this mixture and drink all of it right away. Do not save for later use. To make sure you get the entire dose, add a little more water to the same glass, swirl gently and drink right away.

Shake the oral suspension (liquid) well just before you measure a dose. Measure the liquid with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.

Use Zithromax for the full prescribed length of time. Your symptoms may improve before the infection is completely cleared. Skipping doses may also increase your risk of further infection that is resistant to antibiotics. Zithromax will not treat a viral infection such as the common cold or flu.

Store at room temperature away from moisture and heat. Throw away any unused liquid medicine after 10 days.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid?

Do not take antacids that contain aluminum or magnesium within 2 hours before or after you take Zithromax. This includes Acid Gone, Aldroxicon, Alternagel, Di-Gel, Gaviscon, Gelusil, Genaton, Maalox, Maldroxal, Milk of Magnesia, Mintox, Mylagen, Mylanta, Pepcid Complete, Rolaids, Rulox, and others. These antacids can make azithromycin less effective when taken at the same time.

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, stop taking Zithromax and call your doctor. Do not use anti-diarrhea medicine unless your doctor tells you to.

Avoid exposure to sunlight or tanning beds. Zithromax can make you sunburn more easily. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.

Zithromax side effects

Get emergency medical help if you have any of these signs of an allergic reaction to Zithromax: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

  • diarrhea that is watery or bloody;

  • headache with chest pain and severe dizziness, fainting, fast or pounding heartbeats;

  • nausea, upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes); or

  • severe skin reaction -- fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.

Common Zithromax side effects may include:

  • mild diarrhea;

  • mild stomach pain or upset;

  • dizziness; or

  • vaginal itching or discharge.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

See also: Side effects (in more detail)

What other drugs will affect Zithromax?

Many drugs can interact with Zithromax. Not all possible interactions are listed here. Tell your doctor about all your medications and any you start or stop using during treatment with Zithromax, especially:

  • droperidol;

  • methadone;

  • nelfinavir;

  • another antibiotic--clarithromycin, erythromycin, moxifloxacin, pentamidine;

  • a blood thinner (warfarin, Coumadin);

  • cancer medicine--arsenic trioxide, vandetanib;

  • an antidepressant--citalopram, escitalopram;

  • anti-malaria medication--chloroquine, halofantrine;

  • heart rhythm medicine--amiodarone, disopyramide, dofetilide, flecainide, ibutilide, procainamide, quinidine, sotalol; or

  • medicine to treat a psychiatric disorder--chlorpromazine, haloperidol, mesoridazine, pimozide, thioridazine.

This list is not complete and many other drugs can interact with Zithromax. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Give a list of all your medicines to any healthcare provider who treats you.

Where can I get more information?

  • Your pharmacist can provide more information about Zithromax.
  • Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use Zithromax only for the indication prescribed.
  • Disclaimer: Every effort has been made to ensure that the information provided by Cerner Multum, Inc. ('Multum') is accurate, up-to-date, and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. Multum information has been compiled for use by healthcare practitioners and consumers in the United States and therefore Multum does not warrant that uses outside of the United States are appropriate, unless specifically indicated otherwise. Multum's drug information does not endorse drugs, diagnose patients or recommend therapy. Multum's drug information is an informational resource designed to assist licensed healthcare practitioners in caring for their patients and/or to serve consumers viewing this service as a supplement to, and not a substitute for, the expertise, skill, knowledge and judgment of healthcare practitioners. The absence of a warning for a given drug or drug combination in no way should be construed to indicate that the drug or drug combination is safe, effective or appropriate for any given patient. Multum does not assume any responsibility for any aspect of healthcare administered with the aid of information Multum provides. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the drugs you are taking, check with your doctor, nurse or pharmacist.

Copyright 1996-2014 Cerner Multum, Inc. Version: 17.02. Revision Date: 2013-06-06, 9:44:07 AM.

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