Common side effects include abdominal cramps, vomiting, and diarrhea.[1] More serious side effects may include Clostridioides difficile colitis, liver problems, prolonged QT, and allergic reactions.[1] It is generally safe in those who are allergic to penicillin.[1] Erythromycin also appears to be safe to use during pregnancy.[2] 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.[5][6] This risk also applies if taken directly by the baby during this age.[7] It is in the macrolide family of antibiotics and works by decreasing bacterial protein production.[1]
^ abcdefghij"Erythromycin". The American Society of Health-System Pharmacists. Archived from the original on 6 September 2015. Retrieved 1 August 2015.
^Hamilton RJ (2013). Tarascon pocket pharmacopoeia (2013 delux lab-coat ed., 14th ed.). [Sudbury, Mass.]: Jones & Bartlett Learning. p. 72. ISBN9781449673611. Archived from the original on 1 August 2020. Retrieved 9 September 2017.
^World Health Organization (2021). World Health Organization model list of essential medicines: 22nd list (2021). Geneva: World Health Organization. hdl:10665/345533. WHO/MHP/HPS/EML/2021.02.