For information regarding the use of Zithromax (azithromycin for oral suspension) in the treatment of pediatric patients, [see Indications and Usage (1) and Dosage and Administration (2)] of the prescribing information for Zithromax (azithromycin for oral suspension) 100 mg/5 mL and 200 mg/5 mL bottles. Summary. Plasma and urine levels of 12 healthy subjects and 30 patients with renal insufficiency of different degrees were examined after oral administration of four 250 mg capsules azithromycin (total daily dose 1,000 mg). Macrolide antibiotics, erythromycin, clarithromycin and azithromycin are commonly prescribed for upper respiratory infection, and their use has recently been further linked to immunomodulatory effects. It remains unknown whether renal insufficiency is a potential risk factor for developing QT interval prolongation in patients taking azithromycin. Conclusion Our case and the findings of others indicate that clinicians should be aware of the dangerous and even potentially lethal side effects of azithromycin. Azithromycin (Zithromax) and clarithromycin (Biaxin) are macrolide antibiotics that are used in the treatment of community-acquired respiratory tract infections, particularly pneumonia. They are derivatives of the older macrolide antibiotic, erythromycin. Structural modifications of erythromycin Renal Insufficiency. Azithromycin pharmacokinetics was investigated in 42 adults (21 to 85 years of age) with varying degrees of renal impairment. Following the oral administration of a single 1.0 g dose of azithromycin (4 × 250 mg capsules). Renal insufficiency. Azithromycin pharmacokinetics were investigated in 42 adults (21 to 85 years of age) with varying degrees of renal impairment. Following the oral administration of a single 1,000 mg dose of azithromycin. Azithromycin - ZITHROMAX® - Renal Dosing. The authors make no claims of the accuracy of the information contained herein; and these suggested doses are not a substitute for clinical judgment. Azithromycin pharmacokinetics were investigated in 42 adults (21 to 85 years of age) with varying degrees of renal impairment. Following the oral administration of a single 1,000 mg dose Common Questions and Answers about Azithromycin in renal failure zithromax If someone here who has used azithromycin to battle Lyme and Bart could help comfort me in my decision to continue with the azithromycin therapy that would be great.