Thanks for your query.
Constipation in young child is mostly related to diet.
Laxatives like duphalac
can be given for short period.
Most important is dietary modification.
Give her plenty of fluids,glucose
water.,green leafy vegetables,salad,fruits,wheat porridge.
Avoid all kind of junk food.
can lead to fissures ,so do sits bath(make him sit in lukewarm water for 10 min.)
Wishing your child good health.