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
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.
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:
jaundice or liver problems caused by taking Zithromax IV; or
a severe allergic reaction to similar drugs such as clarithromycin, erythromycin, or telithromycin.
Zithromax IV oral should not be used to treat pneumonia in people who have:
an infection after being in a hospital;
an infection in the blood;
a weak immune system (caused by diseases such as HIV/AIDS or cancer); or
in older adults and those who are ill or debilitated.
Tell your doctor if you have ever had:
liver or kidney disease;
low levels of potassium in your blood;
a heart rhythm disorder; or
long QT syndrome (in you or a family member).
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.
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.
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:
severe stomach pain, diarrhea that is watery or bloody;
fast or pounding heartbeats, fluttering in your chest, shortness of breath, and sudden dizziness (like you might pass out); or
liver problems--nausea, vomiting, loss of appetite, stomach pain (upper right side), tiredness, itching, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
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:
nausea, vomiting; or
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.
What other drugs will affect Zithromax IV?
Tell your doctor about all your other medicines, especially:
an antacid that contains aluminum or magnesium--Acid Gone, Gaviscon, Gelusil, Maalox, Milk of Magnesia, Mylanta, Pepcid Complete, Rolaids, Rulox, and others; or
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.
There are several antibiotics that kill the common mouth bacteria that cause tooth infections. The best (first-line) antibiotics for tooth infection include: Amoxicillin, Penicillin, Cephalexin, Clindamycin, Azithromycin. Amoxicillin is often the first choice because it is widely effective and has the fewest gastrointestinal side effects. Continue reading
Azithromycin will be in your system for around 15.5 days, after the last dose. Azithromycin has an elimination half-life of 68 hours. The prolonged terminal half-life is thought to be due to extensive uptake and subsequent release of drug from tissues. It takes around 5.5 x elimination half life's for a medicine to be out of your system. Continue reading
A single dose of azithromycin 1 gram orally will cure genital chlamydia according to the CDC Guidelines for Sexually Transmitted Diseases but it will take approximately one week to work. You should not have sex during this time, otherwise you may infect your sexual partner with chlamydia. Continue reading
Penicillin or amoxicillin are considered the best first-line treatments for Strep throat. According to the CDC (Centers for Disease Control and Prevention) “ There has never been a report of a clinical isolate of group A strep that is resistant to penicillin”. For people with a penicillin allergy, treat Strep throat with either a narrow-spectrum cephalosporin (such as cephalexin or cefadroxil), clindamycin, azithromycin, or clarithromycin. Note that resistance to azithromycin and clarithromycin has been reported. Continue reading
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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.
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