'''Enterotoksin''' yaiku [[eksotoksin]] kang aktivitase menehimenéhi pengaruh [[usus halus]], saenggasaéngga umumeumumé nyebabakenyebabaké sekresisekrèsi cairan sacara kakehan ing jero rongga usus, nyebabake [[diare]] lan muntah-muntah. <ref name="Madigan">{(en)Madigan MT, Martinko JM, Dunlap PV, Clark DP. 2008. Biology of Microorganisms 12th edition. San Francisco: Pearson. Hal:719-720 ISBN 0-13-196893-9</ref> Enterotoksin diproduksi dening pirang-pirang macem bakteri, kagolong organisme panyebab keracunan panganan kayata ''[[Staphylococcus aureus]]'', ''[[Bacillus cereus]]'', ''[[Clostridium perfringens]]'', ''[[Escherichia coli]]'', ''[[Salmonella enteriditis]]'' , dan ''[[Vibrio cholerae]]''. Enterotoksin kang diasilake dening ''V. cholerae'' yaiku panyebab [[kolera]].<ref name="Holmgren">{{en}}Holmgren J. 1973. Comparison of the Tissue Receptors for ''Vibrio cholerae'' and ''Escherichia coli'' Enterotoxins by Means of Gangliosides and Natural Cholera Toxoid. ''American Society for Microbiology'' 8(6):851-859.</ref>
Toksin mau bakal ngaktifake enzim [[siklik adenilase]] kang ngowahi [[ATP]] dadi [[cAMP]] saengga cAMP dadi kakehan lan nyebabake ion [[klorida]] sarta [[bikarbonat]] ditokake kanthi cacah gedhe saka sel mukosa tekan jero rongga usus.<ref name="Madigan"/> Iki nyebabake dehidrasi ing penderia kolera.<ref name="Madigan"/> [[Gen]] kang ngodekake enterotoksin kolera ana loro yaiku ''ctxA'' dan ''ctxB''</ref name="Madigan"/>
