 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST] . Use sodium polystyrene sulfonate rectally as an enema as directed by your doctor, usually every 6 hours as needed. Keep the enema in the rectum for several hours, if possible. Use a non-sodium-containing cleansing enema after each dose as directed. The dosage and length of treatment are based on your medical condition and response to treatment. Follow your doctor's instructions carefully. Do not use more of this medication or use it for longer than directed because your potassium blood level may drop too low. Keep all laboratory and medical appointments so your doctor can check your potassium blood level.The side effects of SPS (With Sorbitol) Rectal: Loss of appetite, nausea, vomiting, or constipation may occur. Less often, diarrhea may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. To prevent constipation, eat dietary fiber, drink enough water, and exercise. You may also need to take a laxative. Ask your pharmacist which type of laxative is right for you. Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects </s>