Zmax

Generic name: Azithromycin, extended-release

What is Zmax?

Zmax is an antibiotic that kills bacteria. It is used in adults to treat sinus infections and certain kinds of pneumonia. It is also used to treat children 6 months and older with community-acquired pneumonia. Zmax only works against bacteria; it does not work against viruses like colds or the flu.

What is the most important information I should know about Zmax?

Zmax is dosed differently from other antibiotics. You take just one dose, one time. On Day 1, Zmax starts working. On Days 2 and 3, you may not feel better right away. After Day 3, Zmax continues to work over time. If your symptoms are not better, call your doctor.

Similar to other antibiotics, there is an increased chance of developing diarrhea while using this drug.

Who should not take Zmax?

Do not take Zmax if you are allergic to azithromycin, erythromycin, ketolide or any macrolide, or telithromycin. Also avoid this drug if you are allergic to any of its ingredients. Zmax has not been used in children under 6 months of age.

What should I tell my doctor before I take the first dose of Zmax?

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

What is the usual dosage?

Adults: Zmax should be taken in a single 2 gram (g) dose.

Children 6 months and older: Zmax should be given as a single dose of 60 mg/kg (equivalent to 27 mg/lb). If your child weighs 75 pounds or more, your doctor may prescribe the adult dose.

How should I take Zmax?

Shake well. It is recommended to take Zmax on an empty stomach (1 hour before or 2 hours after a meal). For adults, the entire contents of a bottle should be taken as one dose; for children, give the amount prescribed by your doctor. Take without regard to antacids containing magnesium and or aluminum hydroxide. To ensure accurate dosing for children, use a dosing spoon, medicine syringe, or cup.

If you receive Zmax in liquid form, it is ready to take. If you receive Zmax as dry powder, you must prepare it before taking your prescribed dose. Add ¼ cup of water to the Zmax bottle. Close tightly and shake thoroughly to mix it.

What should I avoid while taking Zmax?

You may not feel better right away after taking Zmax. In the meantime, to help improve your symptoms, avoid smoking, drinking alcohol or soda and coffee. Instead, get plenty of rest, drink lots of fluids (water or juice), and speak to your doctor before taking symptom-relief medicines (cough suppressants, pain-relievers, or fever reducers). If your child vomits within 1 hour of taking the medicine, avoid giving more Zmax to your child unless instructed to do so by your doctor.

What are possible food and drug interactions associated with Zmax?

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 medication, anti-seizure medication, cyclosporines, digoxin, ergotamine or dihydroergotamine, migraine medication, phenytoin, or warfarin.

What are the possible side effects of Zmax?

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 this drug.

Side effects may include: abnormal heart rhythm, allergic reaction (hives, face/throat swelling, trouble swallowing, wheezing/trouble breathing), diarrhea, headache (common in adults), nausea/vomiting, stomach pain

Can I receive Zmax if I am pregnant or breastfeeding?

The effects of Zmax during pregnancy and breastfeeding are unknown. Tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

What should I do if I miss a dose of Zmax?

Zmax requires only a single dose. If you forget to take your dose, take it as soon as you remember.

How should I store Zmax?

Store at room temperature. Once prepared, it should be used within 12 hours.