 <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]  start treatment with naloxegol. Your doctor may direct you to take other laxatives if your condition does not improve after 3 days of treatment with naloxegol. Ask your doctor for more details and follow your doctor's instructions carefully. Tell your doctor if your constipation lasts or gets worse.The side effects of Movantik Oral: Pain in the stomach/abdomen, diarrhea, or gas may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. 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. Opiate withdrawal symptoms may occur in some people. Tell your doctor right away if any of these withdrawal symptoms occur: sweating, chills, pain in the stomach/abdomen, diarrhea, yawning, mental/mood changes (such as anxiety/irritability). This drug may rarely cause a serious tear in the stomach or intestinal wall (perforation). If you notice any of the following unlikely but serious side effects, get medical help right away: severe stomach/abdominal pain that doesn't go away, fever, dizziness </s>