Comparative Pharmacology
Head-to-head clinical analysis: E E S 400 versus TAO.
Peer-Reviewed Evidence
Head-to-head clinical analysis: E E S 400 versus TAO.
E.E.S. 400 vs TAO
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
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.
Troleandomycin (TAO) is a macrolide antibiotic that inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit, preventing peptide chain elongation.
Erythromycin ethylsuccinate 400 mg orally every 6 hours. For severe infections, up to 4 g/day in divided doses.
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
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.
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) excretion of unchanged drug and metabolites; approximately 2-5% renal excretion of unchanged drug; 5-15% fecal elimination.
Primarily hepatic metabolism with <10% excreted unchanged in urine; approximately 30% excreted in feces via bile.
Category C
Category C
Macrolide Antibiotic
Macrolide Antibiotic