Lactulose

A synthetic sugar that is not absorbed by the body. It draws water into the colon to soften stools.

Dosage by Body Weight

Dose adjusted based on response. May take 24-48 hours to work.

  1. Body Weight
    Under 10 kg
    Dose
    2.5 ml to 5 ml
    Frequency
    Once or twice daily
    Tracking Notes
    Monitor for flatulence and abdominal cramps.
  2. Body Weight
    10-20 kg
    Dose
    5 ml to 10 ml
    Frequency
    Twice daily
    Tracking Notes
    Maintain adequate fluid intake.

Formulation

Syrup

Purpose

Osmotic laxative used for chronic constipation and portal-systemic encephalopathy.

Generic Name

Lactulose

Branded Drug Names

Lactulose is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:

Scheduled Drug

No. This medicine is generally not treated as a scheduled/prescription-only drug in common consumer references, but local rules may vary.

Alternatives

Safety Advice

Alcohol

CAUTION

Lactulose: Alcohol can worsen stomach irritation, dehydration, dizziness, or bowel symptoms. Avoid or limit alcohol.

Pregnancy

SAFE IF PRESCRIBED

Lactulose: Use during pregnancy only when prescribed or recommended by a healthcare provider for the specific condition.

Breast Feeding

SAFE IF PRESCRIBED

Lactulose: Use while breastfeeding only as directed; monitor the infant for diarrhea, drowsiness, or feeding changes when relevant.

Driving

SAFE

Lactulose: Usually does not affect driving, but dizziness, cramps, or weakness can occur. Avoid driving if affected.

Liver

CAUTION

Lactulose: Use caution in significant liver disease or when the medicine is used for liver-related complications.

Kidney

CAUTION

Lactulose: Kidney disease or dehydration can increase side-effect risk for some gastrointestinal medicines. Use with medical guidance.

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.