Comparative Pharmacology
Head-to-head clinical analysis: AZASITE versus E E S 400.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AZASITE versus E E S 400.
AZASITE vs E.E.S. 400
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Azasite (azithromycin ophthalmic solution) is a macrolide antibiotic that binds to the 50S ribosomal subunit of susceptible bacteria, inhibiting protein synthesis.
Erythromycin, a macrolide antibiotic, binds to the 50S ribosomal subunit of susceptible bacteria, inhibiting protein synthesis. At high concentrations, it may also inhibit RNA synthesis.
1 drop of 1% ophthalmic solution to each affected eye twice daily (approximately 12 hours apart) for 2 days, then once daily for 5 days.
Erythromycin ethylsuccinate 400 mg orally every 6 hours. For severe infections, up to 4 g/day in divided doses.
None Documented
None Documented
Terminal elimination half-life: 68-72 hours; facilitates once-weekly dosing for trachoma.
1.5-2.0 hours in adults with normal renal function; may be prolonged in hepatic impairment (up to 5-6 hours) but not significantly changed in renal disease.
Primarily hepatic/biliary (fecal) as unchanged drug: ~70% fecal, ~20% renal (mostly unchanged), ~0.5% urinary as metabolites.
Primarily hepatic (biliary) excretion of unchanged drug and metabolites; approximately 2-5% renal excretion of unchanged drug; 5-15% fecal elimination.
Category C
Category C
Macrolide Antibiotic
Macrolide Antibiotic