Dilaudid 4 mg is a prescription opioid medication used to treat severe pain. It contains 4 mg of hydromorphone, a powerful pain reliever that works by affecting the brain and nervous system to reduce pain perception. Commonly prescribed for conditions like post-surgical pain, injury, or chronic pain, Dilaudid 4 mg provides rapid and effective relief. Due to its potency and potential for misuse, it should only be taken as prescribed by a healthcare provider. Always follow your doctor’s instructions for safe and effective use.