Drugs used for fibromyalgia symptoms may be beneficial but harmful at the same time due to adverse effects. There is limited research to specific drugs used for fibromyalgia, but opioids, antidepressants, and anticonvulsant drugs are prescribed to patients. Tramadol, an opioid has shown effectiveness in helping with fibromyalgia symptoms, but it is highly addictive. Many types of antidepressant drugs are used for fibromyalgia, but they often have side effects. The anticonvulsant, pregabalin has also been used for treatment.