Erythromycin
chemical compound

Erythromycin (sometimes abbreviated ETM in reports) is an antibiotic used for the treatment of a number of bacterial infections. This includes respiratory tract infections, skin infections, chlamydia infections, pelvic inflammatory disease, and syphilis. It may also be used during pregnancy to prevent Group B streptococcal infection in the newborn, and to improve delayed stomach emptying. It can be given intravenously and by mouth. An eye ointment is routinely recommended after delivery to prevent eye infections in the newborn.
Common side effects include abdominal cramps, vomiting, and diarrhea. More serious side effects may include Clostridioides difficile colitis, liver problems, prolonged QT, and allergic reactions. It is generally safe in those who are allergic to penicillin. Erythromycin also appears to be safe to use during pregnancy. While generally regarded as safe during breastfeeding, its use by the mother during the first two weeks of life may increase the risk of pyloric stenosis in the baby.
The public source identifies “Erythromycin” as chemical compound. This brief keeps that definition visible, then builds a research path around Erythromycin, chemical and compound.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q213511. The Library of Congress control number is sh85044753. None of the 1 selected statements returned an explicit reference.
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This entry incorporates text from “Erythromycin” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.