Opana ER 20 mg is a prescription medication that contains oxymorphone in an extended-release form. It's designed to help manage severe pain that needs constant, around-the-clock attention. This medication provides long-lasting pain relief, which can significantly enhance the quality of life for those dealing with chronic pain issues. It's important to understand the correct dosing, be aware of potential side effects, and take necessary safety precautions, especially regarding the risks of addiction and respiratory problems.