###Human: My son is 4-year-old has gas trouble and constipation. Please advice. ###Assistant: Hello. 1. Please increase water consumption for the child and reduce the amount of bread and bread products that may or may not be consumed. 2. As of now, you can start the child on some laxative like syrup Duphalac (Lactulose) which will help the child to pass stool. Please give syrup Duphalac 7 ml twice a day with plenty of water for 10 days and observe. 3. SOS if the child still needs help in passing stools, you may give a Dulcolax pediatric suppository (Bisacodyl).