Azithromycin is indicated for the treatment of the following infections when known or likely to be due to one or more susceptible microorganisms (see section 5.1): Diseases. Each species has specific effect and causes symptoms in people who are infected. Some, if not most people who are infected with a pathogenic bacteria do not have symptoms. Azithromycin is an organic substance belonging to the group of macrolides, which is a subclass of azalides. This antibiotic works by blocking the production of important specific proteins produced by bacteria, which results in cessation of bacterial growth and reproduction. Intracellular Accumulation, Subcellular Distribution, and Efflux of Tilmicosin in Chicken Phagocytes BERNARD SCORNEAUX and THOMAS R. SHRYOCK1 Animal Science Research, Elanco Animal Health, 2001 West Main Street, Greenfield, Indiana 46140 ABSTRACT Tilmicosin is a semi-synthetic. Azithromycin tablets are macrolide antibacterial drug indicated for the treatment of patients with mild to moderate infections caused by susceptible strains of the designated microorganisms in the specific conditions listed below. Zithromax is a macrolide antibacterial drug indicated for the treatment of patients with mild to moderate infections caused by susceptible strains of the designated microorganisms in the specific conditions listed below. 500 mg PO on first day of therapy, followed by 250 mg PO once daily on days 2 to 5. Guidelines recommend azithromycin as a monotherapy option in previously healthy outpatients with no risk factors for drug-resistant S. pneumoniae and without therapy in the preceding 3 months. ZITHROMAX® (azithromycin) Tablets and Oral Suspension. DESCRIPTION. ZITHROMAX (azithromycin tablets and oral suspension) contains the active ingredient azithromycin, a macrolide antibacterial drug , for oral administration. Azithromycin for sinus infection treatment. Sinusitis is the most common complication associated with acute infections of the upper respiratory tract. Azithromycin, the first azalide from the macrolide class of antibiotics, has rapidly become one of the more common antibiotics prescribed by paediatricians, particularly for respiratory infections.