Tramadol is a centrally acting opioid analgesic used to manage moderate to moderately severe pain. It's commonly prescribed for conditions such as post-operative pain, dental pain, and chronic pain conditions like fibromyalgia and osteoarthritis. Tramadol is available in both immediate-release and extended-release formulations. Tramadol works by binding to mu-opioid receptors in the brain and inhibiting the reuptake of serotonin and norepinephrine.