Zmax (Azithromycin) Tablets

Zmax is the name under which we catalog azithromycin oral tablets, a macrolide antibiotic that physicians prescribe for a range of susceptible bacterial infections. We offer it in 100 mg, 250 mg, 500 mg, and 1000 mg tablets, giving customers flexibility to match a package to a prescribed course.

What Is Zmax?

Azithromycin works by binding to the 50S ribosomal subunit of susceptible bacteria, blocking protein synthesis and limiting bacterial growth. It is used for selected respiratory, skin, and soft-tissue infections, including community-acquired pneumonia and some cases of pharyngitis or tonsillitis when azithromycin is an appropriate choice. Its long tissue half-life allows many regimens to be shorter than those used with older macrolides such as erythromycin. Azithromycin does not treat viral illnesses, and the infection, likely organism, local resistance patterns, and patient-specific risks all affect whether it is suitable.

Key Facts About Zmax

Typical adult regimens include a single 500 mg dose on day one followed by 250 mg once daily on days two through five, or 500 mg once daily for three days, depending on the infection being treated. A prescriber determines the exact dose and duration. The tablets can be taken with or without food. A missed dose is generally taken when remembered unless the next dose is nearly due; two doses should not be taken together to compensate.

Take azithromycin at approximately the same time each day and complete the prescribed course unless a clinician directs otherwise. Symptoms may begin improving within the first few days, but improvement does not mean that the infection has been fully treated. Lack of improvement or worsening symptoms should be reviewed by the prescriber rather than managed by extending or repeating the course without advice.

Common Effects and Precautions

• The most frequently reported effects are diarrhea, nausea, abdominal pain, vomiting, and headache.
• Azithromycin is contraindicated in patients with a history of cholestatic jaundice or hepatic dysfunction associated with previous azithromycin use. New jaundice, dark urine, unusual fatigue, or persistent upper abdominal pain requires prompt medical review.
• Azithromycin can prolong the QT interval. A prescriber should assess patients with an existing rhythm disorder, slow heart rate, low potassium or magnesium, heart failure, or concurrent use of another QT-prolonging medicine.
• Antacids containing aluminum or magnesium should not be taken at the same time as azithromycin. Warfarin may require closer clotting-time monitoring, and all prescription medicines, over-the-counter products, and supplements should be disclosed before treatment.
• Severe, persistent, or bloody diarrhea can indicate antibiotic-associated colitis and may occur during treatment or after the course has ended. It requires medical assessment rather than self-treatment with an antidiarrheal medicine.

Urgent medical attention is appropriate for fainting, a fast or irregular heartbeat, severe weakness, signs of liver injury, or severe diarrhea. A clinician may review liver function, electrolytes, heart-rhythm risk, or anticoagulation results when the patient's history and concurrent medicines make such monitoring relevant.

Storage

Store Zmax tablets at 68°F to 77°F. Excursions from 59°F to 86°F are permitted. Keep the tablets in their original container, protected from excess moisture, and out of the reach of children.

Available Strengths and Package Sizes

We stock 100 mg, 250 mg, and 500 mg tablets in quantities of 10, 20, 30, 60, 90, 120, 180, 270, or 360. The 1000 mg tablets are available in quantities of 20, 30, 60, 90, 120, 180, or 360. The required strength, number of tablets, and treatment duration should follow the prescriber's directions.

Important Notes Before You Order

Azithromycin is authorized for human medical use in the United States, and oral azithromycin tablets are classified as prescription medicine. Use the selected strength only under a prescriber's direction, and check the prescribed dose and tablet count before ordering. Our support team is available by email, online chat, or phone 24/7 to answer questions about an order, available options, payment, or delivery.

Antibiotics are not interchangeable solely because they can be used for some of the same infections. Azithromycin and erythromycin are both macrolides, whereas Doxycycline is a tetracycline antibiotic with different coverage, precautions, and administration requirements. A prescriber chooses among them according to the infection, allergies, other medical conditions, concurrent medicines, and local susceptibility information. For additional reader-facing options, browse our Antibiotics category.