Chronic constipation is a chronic condition for which the cause is often not found. Therefore, the use of laxatives is generally unavoidable. However, what laxative to use, when to use, for what purpose, etc., is completely different. 1. Use safe laxatives. Such as fiber or safe Fosamax, Sutex, Dulcolax, etc. 2. Use it promptly when there is difficulty in bowel movement. Do not delay too long. Relieve the amount of timely tapering or stop the drug. 3, used in patients with slowed colonic transmission. Mostly those without bowel movement. Exit obstruction or those with bowel movements are mostly not suitable, but need to open the plug. 4, for what purpose used is the doctor figured out the cause or mechanism of your constipation, in order to relieve the condition, intermittent temporary use, can also be for. It can also be used temporarily to improve the movement of the colon, etc. It can also be for other purposes. This needs to be used at the doctor’s discretion.