Laxatives and Antidiarrheal Medicines

Laxatives refer to drugs which boost bowel movements in order to accelerate the discharging of feces. Based on the different mechanisms of action, it can be divided into four categories: 1 bulk laxative (or salt laxatives or mechanical laxative), such as magnesium sulfate; 2 stimulant laxatives such as phenolphthalein, castor oil and so on. 3 lubricating laxatives such as paraffin oil; 4 wettability laxatives, such as dioctyl sodium sulfosuccinate; These drugs, in clinical practice, are mainly used for the treatment of  the constipation caused by various kinds of reasons or promoting the discharging of intestinal poison, or cleaning the intestines for intestine check or surgery.

Antidiarrheal Medicines can achieve the purpose of stopping diarrhea through reducing the intestinal peristalsis or protecting the intestinal from irritation. Based on different modes of action, it can be divided into the following four categories: 1 Opiates, such as the compound camphor tincture; 2 Convergence protection agents, such as tannic acid protein and bismuth subcarbonate. 3 adsorbents such as medicinal charcoal; 4 Agents for reducing intestinal motility and has the functions of convergence such as diphenoxylate, loperamide and so on. Antidiarrheal medicine is suitable for the treatment of severe diarrhea or chronic diarrhea. However, in case of inflammatory diarrhea, these drugs are generally not used, and if used, should be used in combination with antibiotics.

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