Description

Indication & Scope

Zithromax®/WeiHong® is a prescription macrolide antibiotic indicated for the treatment of mild to moderate infections caused by susceptible microorganisms, including respiratory tract infections, community-acquired pneumonia, urogenital infections, and uncomplicated skin and soft tissue infections.

Mechanism: Azithromycin binds to the bacterial 50S ribosomal subunit and inhibits protein synthesis, preventing bacterial growth and replication.
Drug class: Macrolide (azalide) antibacterial agent.
Clinical use: Outpatient treatment of susceptible bacterial infections, including respiratory infections, atypical pneumonia, and selected sexually transmitted infections.

Specification

Generic Name	Azithromycin Tablets
Brand Name	Zithromax®; WeiHong®
Ingredient	Azithromycin
Dosage Form	Tablet
Package	0.25 g/tablet, 6 tablets/carton
Conditions Treated	Respiratory tract infections, community-acquired pneumonia, urogenital infections, skin and soft tissue infections
Taboos	Hypersensitivity to azithromycin, erythromycin, other macrolides, or any component of the product
Place of origin	China
Prescription type	Prescription Drug (Rx)
Storage Conditions	Store in a dry place below 25°C. Protect from moisture and light.
Manufacturer	Viatris Pharmaceuticals (Dalian) Co., Ltd.; CSPC Ouyi Pharmaceutical Co., Ltd.
Registration Authority	National Medical Products Administration (NMPA), China
Approval Number	H10960167; H10980218
Approval Date	April 14, 2025; June 25, 2024
Shelf Life	60 months; 24 months

How to use ?

Recommended Dose: Adults usually receive 1.5 g total dose: 3-day regimen: 500 mg once daily for 3 days. 5-day regimen: 500 mg on Day 1, followed by 250 mg once daily on Days 2–5. For certain sexually transmitted infections, a single oral dose of 1 g may be used according to clinical diagnosis.

Time: Take orally once daily. Tablets may be taken with or without food.

Instructions for use: Swallow whole with water. Separate aluminum/magnesium antacids by at least 2 hours. Use only for confirmed or strongly suspected bacterial infections to reduce antimicrobial resistance.

Interaction: Aluminum/magnesium antacids may reduce absorption. Monitor patients receiving warfarin, digoxin, or QT-prolonging drugs. Avoid combination with ergot derivatives.

Side effects: Common adverse reactions include diarrhea, nausea, abdominal discomfort, vomiting, headache, dizziness, rash, and fatigue. Serious adverse reactions may include allergic reactions, QT prolongation, severe liver injury, Clostridioides difficile–associated diarrhea, and severe skin reactions.

Important Notice

This product should be administered only by qualified healthcare professionals in accordance with the approved prescribing information and local clinical guidelines. Dosage and administration may vary depending on patient condition, indication, and regional regulatory requirements.

Packaging & Shipping

Packaging

Original manufacturer’s packaging with secure export carton. Customized export packaging is available upon request.

Shipping Methods

Express Courier (EMS, DHL, FedEx, UPS), Air Freight, and Sea Freight. Cold-chain transportation is available for products requiring temperature-controlled logistics.

Export Support

Certificate of Analysis

GMP Certificate

Commercial Invoice

Packing List & CPP

Cold Chain Logistics

Customs Documentation

Scientific and regulatory sources

1.WHO References

2.NMPA

3.FDA

4.EMA

FAQ

What is Zithromax®/WeiHong® used for?

It is used to treat mild to moderate bacterial infections, including respiratory infections, atypical pneumonia, urogenital infections, and some skin infections caused by susceptible bacteria.

Can Zithromax®/WeiHong® treat viral infections such as the common cold?

No. It is an antibacterial medicine and does not work against viral infections.

How is Zithromax®/WeiHong® taken?

It is taken orally once daily according to the prescribed regimen. The treatment duration depends on the type of infection.

Can patients with macrolide allergy use this medicine?

No. Patients with hypersensitivity to azithromycin, erythromycin, or other macrolides should not use this medicine.