E.E.S. 400 Liquid: Each 5-mL teaspoonful of orange-flavored suspension contains erythromycin ethylsuccinate equivalent to 400 mg of erythromycin. Granules and ready-made suspensions are. Erythromycin ethylsuccinate is an ester of erythromycin suitable for oral administration. Erythromycin ethylsuccinate is known chemically as erythromycin 2' (ethylsuccinate). Find patient medical information for Erythromycin (E.E.S., E-Mycin, and others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Erythromycin Ethyl Succinate Tablets package insert / prescribing information for healthcare professionals. Includes: indications, dosage, adverse reactions and pharmacology. Erythromycin Ethylsuccinate reference guide for safe and effective use from the American Society of Health-System Pharmacists (AHFS DI). Erythromycin may cause diarrhea, and in some cases it can be severe. It may occur 2 months or more after you stop using this medicine. Do not take any medicine to treat diarrhea without first checking with your doctor. Diarrhea medicines may make the diarrhea worse or make it last longer. What Is Erythromycin Ethyl Succinate and How Does It Work? Erythromycin Ethyl Succinate is a prescription medication used for treating different types of bacterial infections. To reduce the development of drug-resistant bacteria and maintain the effectiveness of Erythromycin Ethylsuccinate and other antibacterial drugs, Erythromycin Ethylsuccinate should be used only to. E.E.S. (Erythromycin Ethylsuccinate) may treat, side effects, dosage, drug interactions, warnings, patient labeling, reviews, and related medications including drug comparison and health resources. erythromycin ethylsuccinate will decrease the level or effect of levonorgestrel oral/ethinylestradiol/ferrous bisglycinate by altering intestinal flora. Applies only to oral forms of hormone.