Is Lactulose Low FODMAP?
AvoidNo. Lactulose is a synthetic sugar used to alleviate constipation. It is considered high FODMAP at a normal serving size.
Lactulose and the Low FODMAP Diet
Lactulose is a synthetic disaccharide composed of galactose and fructose. It is primarily used in the medical field as a laxative to treat constipation, as it draws water into the bowel to stimulate bowel movements. Additionally, it is used to treat hepatic encephalopathy, a liver-related brain disorder, by reducing blood ammonia levels. Lactulose is generally administered orally or rectally and is not significantly absorbed in the small intestine, which contributes to its effectiveness as a laxative.
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- Evidence-based. Diet compatibility ratings are compiled from peer-reviewed nutrition guidance, dietary association recommendations, and ingredient composition data.
- Continuously updated. Our ingredient database is refreshed as new sources and product data become available.
- Transparent uncertainty. When an ingredient's safety depends on serving size, preparation, or sub-ingredients, we mark it “caution” rather than forcing a binary answer.
- Not medical advice. Ratings are general guidance. Always consult a registered dietitian for personalized recommendations.
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