Azithromycin Dosing and Treatment Duration Azithromycin dosing varies significantly by indication, with the most common adult regimen being 500 mg on day 1 followed by 250 mg daily on days 2-5 for respiratory infections, while sexually transmitted infections typically require a single 1-gram dose. 1 Detailed Azithromycin dosage information for adults and children. Includes dosages for Bacterial Infection, Sinusitis, Bronchitis and more; plus renal, liver and dialysis adjustments. Medscape - Infection-specific dosing for Zithromax (azithromycin), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. The recommended dosage for controlling asthma exacerbations with azithromycin is either 500 mg or 250 mg taken orally as tablets three times a week. In adults with severe asthma, low-dose azithromycin may be prescribed as an add-on treatment when standard therapies such as inhaled corticosteroids or long-acting β 2 agonists are not sufficient. Complete guide to azithromycin dosing calculator for pediatric and adult patients. Professional tool for accurate antibiotic dose calculations with safety features. Read on for Z-Pak dosage information, including typical dosage, adjustments for health conditions, and what to do if you miss a dose. Azithromycin is an antibiotic used to treat many different types of infections caused by bacteria. Includes Azithromycin side effects, interactions and indications. Description Azithromycin is used to treat certain bacterial infections in many different parts of the body. This medicine may mask or delay the symptoms of syphilis. It is not effective against syphilis infections. Azithromycin belongs to the class of drugs known as macrolide antibiotics. It works by killing bacteria or preventing their growth. However, this medicine will not work for colds. Azithromycin is used to treat certain bacterial infections. Find out what the recommended dosages are, how to take the drug, and more. Find patient medical information for Azithromycin (Zithromax, Z-Pak, Zmax) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings.