NCIt definition : The lauryl sulfate ester of propionyl erythromycin, a broad-spectrum, topical macrolide
antibiotic with antibacterial activity. Erythromycin estolate diffuses through the
bacterial cell membrane and reversibly binds to the 50S subunit of the bacterial ribosome.
This prevents bacterial protein synthesis. Erythromycin estolate may be bacteriostatic
or bactericidal in action, depending on the concentration of the drug at the site
of infection and the susceptibility of the organism involved.;