 <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]  child's weight. Consult the pharmacist or doctor if you have questions or if you need help choosing a nonprescription product. For certain conditions (such as arthritis), it may take up to two weeks of taking this drug regularly until you get the full benefit. If you are taking this drug "as needed" (not on a regular schedule), remember that pain medications work best if they are used as the first signs of pain occur. If you wait until the pain has worsened, the medication may not work as well. If your condition lasts or gets worse, or if you think you may have a serious medical problem, get medical help right away. If you are using the nonprescription product to treat yourself or a child for fever or pain, consult the doctor right away if fever gets worse or lasts more than 3 days, or if pain worsens or lasts more than 10 days.The side effects of Advil Migraine Oral: See also Warning section. Upset stomach, nausea, vomiting, headache, diarrhea, constipation, dizziness, or drowsiness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. If your doctor has prescribed this medication, remember that your doctor has judged that the benefit to </s>