Nausea after drinking laxatives for proctoscopy can be relieved by standardizing the taking of laxatives, changing the type of laxatives, and changing the way of cleansing the intestinal tract. 1. standardize the taking of laxatives: may be the patient taking laxatives too fast, too much, it will stimulate the gastrointestinal tract leading to nausea, or even vomiting symptoms; recommended to be after the symptoms are relieved by times, slow down the speed of taking. 2. Change the type of laxative: if the nausea symptoms are more obvious when taking a laxative, you can consider using other laxatives to promote defecation, such as polyethylene glycol electrolyte bulk, mannitol and so on. 3. Change the way to clean the intestines: saline enema can be used to clean the intestines. Nausea after drinking laxatives after proctoscopy if the symptoms are serious or can not be relieved after adjustment can go to the hospital, consult a professional doctor.