 <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]  skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.  Storage Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets. See also Warning section. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. For more details, read the Medication Guide, or consult your pharmacist or local waste disposal company.The uses of Hydromorphone (PF) In 0.9 % Sodium Chloride Intravenous: This medication is used to relieve moderate to severe pain. Hydromorphone is an opioid pain reliever. It acts on certain centers in the brain to give you pain relief. How to use Hydromorphone HCL-0.9% Nacl Patient Controlled Analgesia Syringe Depending on your specific product, this medication is given by injection under the skin, into a muscle, or slowly into a vein. Use exactly as directed by your doctor. Learn the proper way to give injections. If you have any questions about using this medication properly, consult your doctor or pharmacist. Before using </s>