 <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]  doctor. You may take this drug with or without food. If you have nausea, it may help to take this drug with food. Ask your doctor or pharmacist about other ways to decrease nausea (such as lying down for 1 to 2 hours with as little head movement as possible). If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose. Do not confuse the dose of hydromorphone liquid in milligrams (mg) with the dose in milliliters (mL). Ask your pharmacist or doctor if you are not sure how to check or measure the dose. If your liquid is a suspension, shake the bottle well before each dose. The dosage is based on your medical condition and response to treatment. Do not increase your dose, take the medication more often, or take it for a longer time than prescribed. Properly stop the medication when so directed. Pain medications work best if they are used when the first signs of pain occur. If you wait until the pain has worsened, the medication may not work as well. If you have ongoing pain (such as due to cancer), your doctor may direct you to also take long </s>