 <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]  of medication, draw the liquid up to the 0.4-milliliter mark on the syringe. A 12-milligram dose is 0.6 milliliters. Ask your doctor or pharmacist if you have any questions or if you are not sure how to measure your dose. Ask your doctor if you should continue using your usual medications for constipation. This medication is used only for constipation caused by opioids. Stop using methylnaltrexone when you stop using opioid pain medication unless otherwise directed by your doctor. Make sure you are close to a bathroom after using this medication. This medication works quickly. Most people have a bowel movement within a few minutes to a few hours after using this medication. Tell your doctor if your condition lasts or gets worse.The side effects of Relistor Subcutaneous: Stomach/abdominal pain, nausea, gas, dizziness, fever, or diarrhea may occur. Pain, redness, or swelling at the injection site may also occur. If any of these effects lasts or gets worse, tell your doctor or pharmacist promptly. To lower your risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position. Remember that this medication has been prescribed because your doctor </s>