The main function of laxatives is to stimulate or promote intestinal peristalsis, cause defecation reflex or soften feces, and moisten the intestines to relieve constipation. Make intestinal contents easy to be excreted, such as magnesium sulfate and sodium sulfate, which are often taken orally. If you take it for a long time, it will easily lead to the decrease or loss of the sensitivity of the tensor of rectal mucosa, thus reducing the rectal defecation reflex. Even if the rectum is full of feces, it can't produce defecation, causing serious defecation difficulties.

Stool will harden if it stays in the rectum for too long. Failure to defecate in time will make defecation difficult and increase intracranial pressure. Causing cerebrovascular damage. It may also induce angina pectoris and even endanger life. Common laxatives, such as cathartic tablets, senna leaves and aloe capsules. Long-term use will cause intestinal inflammation. It is easy to get melanosis of stool and induce intestinal polyps.

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Precautions in using laxatives

1. Many patients will take various laxatives continuously for a long time. In fact, it takes 3-4 days for laxatives to refill the colon after they are completely emptied, so continuous medication is not appropriate.

2. laxatives generally take effect 6-8 hours after oral administration, so it is more in line with physiological laws to arrange medication time reasonably before going to bed, so defecation in the morning or after breakfast is more in line with physiological laws.

3. To treat constipation, especially habitual constipation, we must first adjust our diet and develop the habit of regular defecation. Eating more vegetables and fruits can often get good results.

4. Different types of laxatives should be selected according to different situations. If toxic substances are excluded, salt laxatives such as magnesium sulfate and sodium sulfate should be selected. General constipation, contact laxatives are more commonly used. Lubricating laxatives are better for the elderly, aneurysms and anal surgery.

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