This compound is an ester of erythromycin base and succinic acid. We are a leading company specializing in the business of offering our clients Erythromycin Ethylsuccinate. This compound is used to treat a wide variety of bacterial infections. It may also be used to prevent certain bacterial infections. Known as a macrolide antibiotic, it works by stopping the growth of bacteria. This antibiotic treats or prevents only bacterial infections, thus will not work for viral infections. Erythromycin Ethylsuccinate diffuses through the bacterial cell membrane and reversibly binds to the 50S subunit of the bacterial ribosome.