About lactulose
Osmotic laxative
Used for
- Treatment of constipation
- Prevention and treatment of hepatic encephalopathy
Usual adult dose
Constipation: usually 15–30 mL once daily. Hepatic encephalopathy: usually 30–45 mL three or four times daily, adjusted to produce two or three soft stools daily.
Usual dose in children
Constipation: under 1 year, up to 5 mL daily; ages 1–6 years, 5–10 mL daily; ages 7–14 years, 10–15 mL daily.
Common side effects
- Gas and bloating
- Abdominal cramps
- Diarrhea
- Nausea
Important warnings
- Excessive diarrhea can cause dehydration and electrolyte imbalance.
- Use caution with diabetes; some liquid products contain sugars.
- Seek medical assessment for severe abdominal pain or suspected bowel obstruction.
Pregnancy
Generally considered usable during pregnancy because absorption is minimal; evidence is limited.
Breastfeeding
Generally considered compatible with breastfeeding because absorption is minimal.
Interactions
- Other laxatives may increase diarrhea and dehydration.
- Medicines that lower potassium may worsen electrolyte imbalance if diarrhea occurs.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.