Overview

Opana ER is a powerful prescription medication used to treat moderate to severe pain. It is an extended-release form of the opioid medication oxymorphone, which works by binding to opioid receptors in the brain to block pain signals. Opana ER is a highly effective pain reliever, but it can also be expensive. Fortunately, it is possible to purchase Opana ER online using an Amex gift card.