After drinking Sodium Phosphate Salt Oral Liquid usually after 2-3 hours will have the feeling of stool, but also with the dose taken and personal circumstances. Sodium phosphate oral solution, usually used for preoperative intestinal cleansing, after taking 2-3 hours, the patient will have a clear sense of stool, but if the dose is relatively small, may appear to have a sense of stool for a relatively long period of time, you can continue to take it appropriately, which can promote bowel movement. Some patients have poor sensitivity to the drug, after taking sodium phosphate oral solution, there is still no stool feeling, do not be too nervous, you can first observe, if necessary, under the guidance of the doctor to increase the dose. Sodium phosphate oral solution can not be used as a treatment for constipation, do not take it blindly on your own to avoid accidents.