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Drugs reference index «Azithromycin suspension, extended-release»

Azithromycin suspension, extended-release

Brand names: Zmax

Why is Azithromycin suspension, extended-release prescribed?

Zmax is an antibiotic that kills bacteria. It is used to treat sinus infections and certain kinds of pneumonia (lung infections). Zmax only works against bacteria. It does not work against viruses such as the common cold or flu.

Most important fact about Azithromycin suspension, extended-release

Zmax is dosed differently from other antibiotics. The complete course of treatment is just one dose taken one time. If your symptoms have not improved 3 days after taking your dose of Zmax, call your doctor.

How should you take Azithromycin suspension, extended-release?

It's best to take Zmax on an empty stomach (1 hour before or 2 hours after a meal.) Shake the bottle well before using. Take all of the medicine in the bottle.

If you receive Zmax in its liquid form, you may take it as is. If you receive it in powder form, you must prepare it before taking your prescribed dose. Add a quarter cup of water to the Zmax powder and shake thoroughly. Use the solution within 12 hours after the water is added.

  • Storage instructions...Store at room temperature.

What side effects may occur?

Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Azithromycin suspension, extended-release.

  • Side effects may include:Allergic reaction (hives, face/throat swelling, trouble swallowing, wheezing or trouble breathing), diarrhea, headache, nausea/vomiting, stomach pain

Why should Azithromycin suspension, extended-release not be prescribed?

Do not take Zmax if you are allergic to azithromycin, erythromycin, ketolide, macrolide antibiotics, or telithromycin. Also, if you are allergic to anything in Zmax, do not take it.

Special warnings about Azithromycin suspension, extended-release

Like all antibiotics, Zmax could cause a severe allergic reaction. If you develop signs of an allergic reaction—including hives, swelling of the face or throat, trouble swallowing, or breathing problems—seek emergency medical treatment immediately.

As with all antibiotics, Zmax could cause a severe intestinal problem known as pseudomembranous colitis. Call your doctor right away if you develop diarrhea that does not go away, or diarrhea that is severe, watery, or bloody. Also, contact your doctor if you vomit within the first hour of taking Zmax.

Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Zmax. Also, talk to your doctor about your complete medical history, especially if you have kidney or liver problems.

Let your doctor know if you are not feeling any better a few days after taking Zmax.

Possible food and drug interactions when taking Azithromycin suspension, extended-release

If Zmax is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Zmax with the following:

Anti-HIV medicationAnti-seizure medicationCyclosporineDigoxinErgot derivatives such as ergotamine or dihydroergotamineHexobarbitalMigraine medicationPhenytoinWarfarin

Special information if you are pregnant or breastfeeding

The effects of Zmax during pregnancy are unknown. Tell your doctor immediately if you are pregnant or planning to become pregnant.

You should not take Zmax if you are breastfeeding, since the drug may pass into breast milk.

Recommended dosage for Azithromycin suspension, extended-release


Zmax should be taken all at once, in a single dose. This dose delivers 2 grams of azithromycin.


Any medication taken in excess can have serious consequences. If you suspect an overdose, seek medical attention immediately.

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