Definition
An enterotoxin is a substance that is harmful to your digestive system. It is produced by certain bacteria. The enterotoxin enters your stomach and intestines if you eat contaminated food or water. It can also be produced by bacteria in the intestines. This causes symptoms such as cramps, nausea, vomiting, or diarrhea.
References
Wong KK, Griffin PM. Foodborne disease. In: Bennett JE, Dolin R, Blaser MJ, eds. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 9th ed. Philadelphia, PA: Elsevier; 2020:chap 101.