Begin with a low dose and gradually increase as needed. For adults, a starting dose is typically 15-30 mL once daily. Children’s doses are significantly lower and depend on age and weight; always consult a pediatrician.
Adjusting Your Lactulose Dose
Monitor bowel movements. If you don’t see a change within 24-48 hours, you may cautiously increase your dose by 5-10 mL daily. Don’t exceed 60 mL per day without medical advice.
- Regularity is key: Aim for soft, formed stools, one to three times per day. Too much laxative: Excessive doses can cause diarrhea, bloating, and gas. Gradual increase: A slow, careful increase is safer than rapid changes.
Lactulose Dosage by Age Group (Approximate – Always consult a doctor)
Infants (under 1 year): 2.5 – 7.5 mL daily. Strictly follow your pediatrician’s instructions. Children (1-6 years): 5 – 15 mL daily. Dose adjustments are vital based on the child’s weight and response. Children (7-14 years): 15 – 30 mL daily. Individualized dosing remains crucial. Adults (15+ years): 15 – 60 mL daily. Start low and increase slowly.
Remember: Lactulose works by drawing water into the colon, softening stool. Consistency is important. If constipation persists despite trying lactulose, seek medical advice; underlying conditions may require attention. Proper hydration supports effective bowel movements, so drink plenty of fluids.


