How long does it take for a baby to have normal bowel movements with Lactulose There is no clear time, it needs to be decided according to the condition and other factors, clinically, generally 2~3 days to have normal bowel movements. Lactulose instructions did not specify how long to take the product defecation back to normal, due to the cause of constipation, individual sensitivity to drugs, the degree of disease, there are individual differences. Clinically, the general treatment 2~3 days after the effect, if the drug 2~3 days after the constipation symptoms did not improve, or recurring, should consult a doctor. Lactulose commonly used dosage form for oral solution, can stimulate peristalsis of the colon, maintain the smooth flow of stools, so as to relieve constipation, restore the physiological rhythm of the colon, improve nitrogen metabolism and so on. It can be used to regulate the physiological rhythm of the colon, treat constipation, hepatic encephalopathy and so on. Lactulose can be seen bloating, abdominal pain, diarrhea and other adverse reactions. The drug is contraindicated in galactosemia, intestinal obstruction, acute abdominal pain, and hypersensitivity to lactulose. The drug should be used rationally under the guidance of a doctor.