--- title: The lactulose solution gave me diarrhoea, is this normal? description: Some people get diarrhoea when they take the lactulose, but this is rare. --- [Skip to content](https://helpcentre.healthpath.com/en/knowledge/the-lactulose-solution-gave-me-diarrhoea-is-this-normal#main-content) English Show submenu for translations ![HP-logo-414-1.png\]](https://helpcentre.healthpath.com/hs-fs/hubfs/HP-logo-414-1.png?height=40&name=HP-logo-414-1.png) - [Default HubSpot Blog](https://healthpath-1.hubspotpagebuilder.com/blog) Open main navigation Close main navigation - [Default HubSpot Blog](https://healthpath-1.hubspotpagebuilder.com/blog) - English Show submenu for translations - [Go to healthpath.com](https://healthpath.com/) [Go to healthpath.com](https://healthpath.com/) Hello. How can we help? - There are no suggestions because the search field is empty. 1. [Help centre](https://helpcentre.healthpath.com/en/knowledge?hsLang=en) 2. [Taking a test](https://helpcentre.healthpath.com/en/knowledge/taking-a-test?hsLang=en) 3. [SIBO Breath Test](https://helpcentre.healthpath.com/en/knowledge/taking-a-test?hsLang=en#sibo-breath-test) # The lactulose solution gave me diarrhoea, is this normal? ## Some people get diarrhoea when they take the lactulose, but this is rare. The lactulose solution for the SIBO test is designed to be metabolised in the digestive system quite quickly. Any reaction people have is usually minor and doesn't last for long. The solution is not a known irritant: foods or pharmaceutical products are more likely to be a problem for most people than lactulose. [Download the SIBO test instructions](https://helpcentre.healthpath.com/en/knowledge/how-do-i-take-a-sibo-test1?hsLang=en) [Read our complete guide to SIBO testing](https://healthpath.com/sibo/sibo-test-complete-guide-2019/?__hstc=233546881.7dffa6bf59ed3e8aaef1e744312bbd62.1601567603866.1604435016722.1604438325169.22&__hssc=233546881.1.1604438325169&__hsfp=3047232828#How%20to%20prepare%20for%20a%20SIBO%20test)   - [Before buying a test](https://helpcentre.healthpath.com/en/knowledge/before-buying-a-test?hsLang=en#main-content) - [Gut Health Tests](https://helpcentre.healthpath.com/en/knowledge/before-buying-a-test?hsLang=en#gut-health-tests) - [SIBO Breath Test](https://helpcentre.healthpath.com/en/knowledge/before-buying-a-test?hsLang=en#sibo-breath-test) - [Food Sensitivity Test](https://helpcentre.healthpath.com/en/knowledge/before-buying-a-test?hsLang=en#food-sensitivity-test) - [All Tests](https://helpcentre.healthpath.com/en/knowledge/before-buying-a-test?hsLang=en#all-tests) - [Children](https://helpcentre.healthpath.com/en/knowledge/before-buying-a-test?hsLang=en#children) - [Preparing for a test](https://helpcentre.healthpath.com/en/knowledge/preparing-for-a-test?hsLang=en#main-content) - [Gut Health Tests](https://helpcentre.healthpath.com/en/knowledge/preparing-for-a-test?hsLang=en#gut-health-tests) - [SIBO Breath Test](https://helpcentre.healthpath.com/en/knowledge/preparing-for-a-test?hsLang=en#sibo-breath-test) - [Supplements](https://helpcentre.healthpath.com/en/knowledge/preparing-for-a-test?hsLang=en#supplements) - [Taking a test](https://helpcentre.healthpath.com/en/knowledge/taking-a-test?hsLang=en#main-content) - [Gut Health Tests](https://helpcentre.healthpath.com/en/knowledge/taking-a-test?hsLang=en#gut-health-tests) - [SIBO Breath Test](https://helpcentre.healthpath.com/en/knowledge/taking-a-test?hsLang=en#sibo-breath-test) - [Food Sensitivity Test](https://helpcentre.healthpath.com/en/knowledge/taking-a-test?hsLang=en#food-sensitivity-test) - [After testing](https://helpcentre.healthpath.com/en/knowledge/after-testing?hsLang=en) - [About our tests](https://helpcentre.healthpath.com/en/knowledge/about-our-tests?hsLang=en#main-content) - [Postal queries](https://helpcentre.healthpath.com/en/knowledge/about-our-tests?hsLang=en#postal-queries) - [Technical queries about tests](https://helpcentre.healthpath.com/en/knowledge/about-our-tests?hsLang=en#technical-queries-about-tests) - [Issues with my kit or test](https://helpcentre.healthpath.com/en/knowledge/about-our-tests?hsLang=en#issues-with-my-kit-or-test) - [Conditions and symptoms](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#main-content) - [Acid Reflux](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#acid-reflux) - [Bad Breath](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#bad-breath) - [Bloating](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#bloating) - [Candida](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#candida) - [Cancer](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#cancer) - [Crohn's and Colitis](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#crohns-and-colitis) - [Depression and anxiety](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#depression-and-anxiety) - [Diarrhoea](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#diarrhoea) - [Infection](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#infection) - [Pregnancy](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#pregnancy) - [SIBO](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#sibo) - [Diverticulitis](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#diverticulitis) - [Reflux](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#reflux) - [Surgery](https://helpcentre.healthpath.com/en/knowledge/conditions-and-symptoms?hsLang=en#surgery) - [About Healthpath](https://helpcentre.healthpath.com/en/knowledge/about-healthpath?hsLang=en#main-content) - [Consultations](https://helpcentre.healthpath.com/en/knowledge/about-healthpath?hsLang=en#consultations) - [Our service](https://helpcentre.healthpath.com/en/knowledge/about-healthpath?hsLang=en#our-service) - [Our team](https://helpcentre.healthpath.com/en/knowledge/about-healthpath?hsLang=en#our-team) - [Partner with us](https://helpcentre.healthpath.com/en/knowledge/partner-with-us?hsLang=en#main-content) - [Practitioners](https://helpcentre.healthpath.com/en/knowledge/partner-with-us?hsLang=en#practitioners) - [Affiliates](https://helpcentre.healthpath.com/en/knowledge/partner-with-us?hsLang=en#affiliates) - [Website](https://helpcentre.healthpath.com/en/knowledge/website?hsLang=en#main-content) - [Your account](https://helpcentre.healthpath.com/en/knowledge/website?hsLang=en#your-account) - [Payments](https://helpcentre.healthpath.com/en/knowledge/website?hsLang=en#payments) - [Privacy](https://helpcentre.healthpath.com/en/knowledge/website?hsLang=en#privacy) - [Refunds](https://helpcentre.healthpath.com/en/knowledge/website?hsLang=en#refunds) - [Technical issues](https://helpcentre.healthpath.com/en/knowledge/website?hsLang=en#technical-issues) [![Chill listening crop-3](https://helpcentre.healthpath.com/hs-fs/hubfs/HP-Help-Centre-Grey%20(1).png?width=188&height=24&name=HP-Help-Centre-Grey%20(1).png "Chill listening crop-3")](https://helpcentre.healthpath.com?hsLang=en) Copyright © 2026, Healthpath