Duphalac oral solution contains a laxative called lactulose. Duphalac may contain small amounts of milk sugars (e.g. lactose), galactose, epilactose or fructose.
 
Directions:
Take Duphalac diluted or undiluted. Swallow the medicine quickly. Do not keep it in the mouth. Take the dosage preferably once a day at the same time. During treatment with laxatives, drink sufficient amounts of fluids (6-8 glasses).

Dosing in constipation or for stool softening:
Starting dose [Maintenance dose]: Adults 10 - 45 ml [10 - 25 ml]; Children (7-14 years) 15 ml [10 -15 ml]; Children (1-6 years) 5 - 10 ml [5 - 10 ml]; Infants under 1 year Up to 5 ml [Up to 5 ml].
Based upon treatment response the doctor may adjust the starting dose to the maintenance dose after a few days. Several (2-3) days of treatment may be needed before treatment effect occurs.