 <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]  you have any withdrawal symptoms such as restlessness, mental/mood changes (including anxiety, trouble sleeping, thoughts of suicide), watering eyes, runny nose, nausea, diarrhea, sweating, muscle aches, or sudden changes in behavior. Though it helps many people, this medication may sometimes cause addiction. This risk may be higher if you have a substance use disorder (such as overuse of or addiction to drugs/alcohol). Use this medication exactly as prescribed to lower the risk of addiction. Ask your doctor or pharmacist for more details. When this medication is used for a long time, it may not work as well. Talk with your doctor if this medication stops working well. Tell your doctor if your pain does not get better or if it gets worse.The side effects of Hydromorphone (PF) Injection: See also Warning section. Nausea, vomiting, constipation, flushing, dry mouth, lightheadedness, dizziness, drowsiness, or sweating may occur. Pain, redness, or swelling at the injection site may also 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. Consult your </s>