Bowel cleansing drugs are relatively safe in clinical applications. When taking the medicine, it should be taken according to the doctor’s advice, and there are no serious adverse reactions. Generally, there are many types of bowel cleansing drugs, and bowel cleansing before colonoscopy or glycerol are both treated by surgery or bowel cleansing before colonoscopy. Anthraquinone and lactitol belong to purgatives and have a good effect on improving constipation.

1. Polyethylene glycol

PEG is an osmotic drug that is not absorbed or metabolized by the intestines after administration. Bowel preparation before colonoscopy usually uses polyethylene glycol 4000 for bowel cleaning treatment. Due to the low sodium content of polyethylene glycol, it does not cause electrolyte imbalance in the intestines, leading to dehydration and other conditions, and has fewer adverse reactions.

2. Glycerol

Glycerol is a type of osmotic drug like polyethylene glycol. Its high osmotic property promotes the secretion of intestinal fluid and water, and has the effect of cleaning the intestines. Glycerol is commonly used in clinical practice for bowel preparation before colonoscopy. After taking glycerol, it is necessary to drink a large amount of water to help clean the intestines.

3. Anthraquinone drugs

Anthraquinone is a刺激性泻药, also commonly used in clinical practice. The anthraquinone components have a strong stimulating effect on the large intestine, mainly acting on the nervous system around the large intestine, accelerating the peristalsis of the large intestine while stimulating the secretion of intestinal fluid, which is more suitable for people with severe constipation. This medicine is not suitable for the elderly or those with poor kidney function, and should not be taken for a long time to avoid adverse effects.

4. Lactitol

Lactitol, as a type of disaccharide, is not easily decomposed and absorbed in the small intestine. It is decomposed by microorganisms into acidic substances, thereby improving the colon pH value. It can also increase the osmotic pressure of the colon, increase the secretion of intestinal fluid, and achieve the effect of cleansing the intestines and defecating. Patients with intestinal obstruction are not allowed.