Lactulose can be drunk with water or taken directly by children of two years of age, if there is any discomfort, treat it promptly. The drug is contraindicated in people with galactosemia, those who are allergic to lactulose. Lactulose is mainly used to treat constipation, regulate the physiological rhythm of the colon, treat or prevent hepatic encephalopathy. Lactulose is usually taken with water or directly at breakfast if taken by a two year old child to treat constipation or to maintain soft stools; there is no specific time to take it if used in hepatic coma or pre-coma. It is recommended that you follow your doctor’s instructions on how much and how to take Lactulose. If too much lactulose is taken, symptoms such as abdominal pain and diarrhea may occur, at which time the drug should be stopped, and if the abdominal pain and diarrhea lead to dehydration and other conditions, electrolyte disorders need to be corrected. The drug is contraindicated in galactosemia, intestinal obstruction, acute abdominal pain and diarrhea inducing agents, and those who are allergic to lactulose.