Caution should be taken when taking Cotrimoxazole Electrolyte Dispersant, and it should be used with caution in patients with severe ulcerative colitis. When using Compound Polyethylene Glycol Electrolyte Dispersant for bowel preparation, it is recommended to start taking it 4 hours before the examination, and solid food should not be eaten 3 to 4 hours before taking the medicine. Patients should take care to follow the doctor’s prescription before taking Compound Polyethylene Glycol Electrolyte Dispersant, and if patients have severe ulcerative colitis, they need to strictly follow the doctor’s prescription to take the medication. In addition, before the colonoscopy, patients should pay attention to start taking Cetrimide 4 hours before the examination, and avoid eating solid and indigestible food for 3~4 hours before taking the medicine, so as not to affect the effect of the drug and the examination results. Compound Polyethylene Glycol Electrolyte Bulk is mainly used for the preparation of intestinal cleansing before surgery as well as the preparation of intestinal cleansing before colonoscopy, barium enema and other examinations. Patients may experience adverse reactions such as nausea and feeling of fullness after taking the drug, and it is forbidden for patients with intestinal obstruction and intestinal perforation; it is not suitable for those who are allergic to Cotrimoxazole Electrolyte Dispersant to prevent allergic symptoms such as generalized itchiness and red rash. Compound Polyethylene Glycol Electrolyte Bulk has more precautions, patients should follow the doctor’s instructions to take medication, should not be taken orally.