Comparative Pharmacology
Head-to-head clinical analysis: AZASITE versus TAO.
Peer-Reviewed Evidence
Head-to-head clinical analysis: AZASITE versus TAO.
AZASITE vs TAO
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.
Troleandomycin (TAO) is a macrolide antibiotic that inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit, preventing peptide chain elongation.
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.
250-500 mg orally every 6 hours or 500 mg intravenously every 6 hours. For severe infections, up to 500 mg every 6 hours IV.
None Documented
None Documented
Terminal elimination half-life: 68-72 hours; facilitates once-weekly dosing for trachoma.
Terminal elimination half-life of 12-24 hours in adults; may be prolonged in hepatic impairment (up to 40-60 hours) and in neonates (2-5 days).
Primarily hepatic/biliary (fecal) as unchanged drug: ~70% fecal, ~20% renal (mostly unchanged), ~0.5% urinary as metabolites.
Primarily hepatic metabolism with <10% excreted unchanged in urine; approximately 30% excreted in feces via bile.
Category C
Category C
Macrolide Antibiotic
Macrolide Antibiotic