Lactulose is relatively safe and can be given orally to infants. It mainly acts as a laxative. If the infant is constipated from birth and has delayed fetal stool expulsion, he or she needs to be alerted to congenital megacolon and needs to have a barium contrast test completed. Part of the cause of constipation in infants comes from the mother, whose intake of excessive spicy foods and high-protein foods, etc., can also cause constipation in infants. Therefore, the specific causes of constipation in infants should be analyzed, and you should not take all kinds of over-the-counter medications, including lactulose, on your own as soon as severe constipation occurs. If the child is breast-fed, the child’s mother should eat a light diet and eat more vegetables and fruits; if the child is formula-fed, she can give the child appropriate juice and massage the abdomen clockwise to promote gastrointestinal peristalsis to help defecation, not just rely on drugs.