Trabodur is a brand name for a medication that contains the active ingredient tramadol, which is an opioid analgesic used to treat moderate to moderately severe pain. It works by affecting the way the brain and nervous system respond to pain. Trabodur is often prescribed for conditions such as post-surgical pain or chronic pain conditions. As with any opioid medication, it carries a risk of dependency and side effects, so it should be used under medical supervision.