Skip to main content

Zithromax IV

Generic name: azithromycin (oral/injection) [ a-ZITH-roe-MYE-sin ]
Brand names: Azithromycin 3 Day Dose Pack, Azithromycin 5 Day Dose Pack, Zithromax, Zithromax IV, Zithromax TRI-PAK, Zithromax Z-Pak
Drug class: Macrolides

Medically reviewed by Drugs.com on Apr 22, 2024. Written by Cerner Multum.

What is Zithromax IV?

Zithromax IV is used to treat many different types of infections caused by bacteria, including infections of the lungs, sinus, throat, tonsils, skin, urinary tract, cervix, or genitals.

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

Zithromax IV side effects

Get emergency medical help if you have signs of an allergic reaction (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning in your eyes, skin pain, red or purple skin rash that spreads and causes blistering and peeling).

Seek medical treatment if you have a serious drug reaction that can affect many parts of your body. Symptoms may include: skin rash, fever, swollen glands, muscle aches, severe weakness, unusual bruising, or yellowing of your skin or eyes.

Zithromax IV may cause serious side effects. Call your doctor at once if you have:

Call your doctor right away if a baby taking Zithromax IV becomes irritable or vomits while eating or nursing.

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

Common side effects of Zithromax IV may include:

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.

Warnings

You should not use Zithromax IV if you have ever had an allergic reaction, jaundice, or liver problems while taking Zithromax IV. You should not use this medicine if you have ever had a severe allergic reaction to similar drugs such as clarithromycin, erythromycin, or telithromycin.

Before taking this medicine

You should not use Zithromax IV if you are allergic to it, or if you have ever had:

Zithromax IV oral should not be used to treat pneumonia in people who have:

Tell your doctor if you have ever had:

It is not known whether this medicine is effective in treating genital ulcers in women.

Tell your doctor if you are pregnant or breastfeeding. Taking Zithromax IV while breastfeeding may cause diarrhea, vomiting, or rash in the nursing baby.

Zithromax IV is not approved for use by anyone younger than 6 months old. This medicine should not be used to treat a throat or tonsil infection in a child younger than 2 years old.

How should I take Zithromax IV?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Zithromax IV oral is taken by mouth. This medicine injection is given as an infusion into a vein, usually for 2 days before you switch to this medicine oral. A healthcare provider will give you this injection.

You may take Zithromax IV oral with or without food.

Shake the oral suspension (liquid) before you measure a dose. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

Use Zithromax IV for the full prescribed length of time, even if your symptoms quickly improve. Skipping doses can increase your risk of infection that is resistant to medication. Zithromax IV will not treat a viral infection such as the flu or a common cold.

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

albuterol, prednisone, amoxicillin, doxycycline, azithromycin, ciprofloxacin, cephalexin, metronidazole, ceftriaxone, clindamycin

What happens if I miss a dose?

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

What happens if I overdose?

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

What should I avoid while taking Zithromax IV?

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, call your doctor before using anti-diarrhea medicine.

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

What other drugs will affect Zithromax IV?

Tell your doctor about all your other medicines, especially:

This list is not complete. Other drugs may affect Zithromax IV, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

Does Zithromax interact with my other drugs?

Enter medications to view a detailed interaction report using our Drug Interaction Checker.

Popular FAQ

Is Zithromax a penicillin?

Zithromax is not a penicillin it is a type of antibiotic called a macrolide. Macrolides kill bacteria by inhibiting protein synthesis and blocking the assembly of the 50S ribosomal subunit, which is a structure in a cell that helps coordinate protein synthesis. Macrolides are unrelated to penicillin and are safe to use in people who are allergic to penicillin. Continue reading

Can I drink alcohol while taking Zithromax?

There are no documented interactions between Zithromax and alcohol so you could drink a small amount of alcohol (one or two glasses) if you wanted to. But drinking larger quantities of alcohol is not recommended generally while you are fighting an infection because it may hinder the body’s ability to fight the infection, lead to dehydration, and interrupt sleep. Drinking large quantities of alcohol while taking Zithromax may also worsen common side effects of Zithromax such as nausea, diarrhea, vomiting, abdominal pain, dyspepsia, flatulence, fatigue, and headache. Continue reading

Is Zithromax available over the counter?

Zithromax is not available over the counter, it is a prescription medicine that must be prescribed by a doctor. Continue reading

More FAQ

View more FAQ

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.