Constipation is not normal after taking medicine, the clinical constipation disease is dry stools, prolonged defecation time, and straining to defecate. Take medicine is to improve these three clinical symptoms, for example, after taking medicine, the stool is not dry and knotted is considered normal. If after taking the medicine, the stool is diluted and the number of stools has changed, for example, 1-2 times a day, or 1-2 days a stool is normal, but more than 3 times a day, it is not normal. It is also not normal to have dry ball-like stools or thin watery stools. Take medicine must ensure that the stool can be discharged, not diarrhea as degree, to the correct guidance of the doctor is a very important factor in the treatment of constipation. Therefore, the majority of patients must be under the correct guidance of doctors, to apply the correct drugs and treatment means, rather than their own random choice of drugs to eat indiscriminately. Constipation has occurred, diarrhea once after taking the medicine, three or four days without stool, the next stool will be more constipated, so the vicious cycle is a sign of poor cognition of the patient, must be overcome off.