Dilaudid, also known by its generic name hydromorphone, is a potent opioid analgesic used to manage moderate to severe pain. It works by binding to opioid receptors in the central nervous system, altering the perception of pain and providing relief.

It is available in various formulations, including tablets, oral solutions, and injectable forms, allowing for flexible dosing options. Due to its potency, it is typically reserved for patients who require strong pain relief, such as those with severe postoperative pain or cancer-related pain. However, it carries a risk of dependence, addiction, and respiratory depression, requiring careful prescribing and monitoring by healthcare professionals.