Sodium phosphate salts are drunk for 3-4 hours and then you will have a bowel movement. Sodium phosphate is an oral solution that is mainly just a drug used for patients to cleanse their intestines before colonoscopy or before surgery. This drug is not recommended to buy on their own, should be under the guidance of a doctor to use the drug to avoid taking the drug improperly on the body caused a series of effects. Under normal circumstances after taking sodium phosphate about 3-4 hours after the patient will have the desire to stool, so a short period of time that can be defecated. Sodium phosphate this drug is mainly a special drug for intestinal preparation, and can not be used as a treatment for constipation, once the constipation patients should eat a light diet, eat more fresh vegetables or fruits, can be combined with the doctor’s advice oral marijuana intestinal pills, Sophora pill, fruit guide tablets and other drugs to relieve constipation, if necessary, can be given anally open plug, can promote intestinal peristalsis, to help patients quickly defecate.