The generic name of Dumex is Lactulose Oral Liquid, generally speaking, you can have a bowel movement after taking the medicine for 1 to 2 days, but the exact time still depends on the individual’s physique, and cannot be generalized. Lactulose oral solution is often used in the treatment of chronic or habitual constipation, regulating the physiological rhythm of the colon; used in the treatment and prevention of hepatic coma or pre-comatose state. Lactulose oral solution effect time, according to their own condition and the doctor’s advice together to decide, generally 1 ~ 2 days can be defecation, not everyone’s effect time is the same, need to be guided by the doctor’s advice under the appropriate amount of medication. At the same time in the process of treatment, you can also eat some fiber-rich foods, moderate consumption of coarse grains, to maintain a light and easy to digest diet, moderate exercise, all of these help to regulate gastrointestinal rhythms, promote defecation.