Tramadol is a commonly prescribed pain reliever that belongs to the opioid family of drugs. However, sometimes patients may have an allergy or intolerance to tramadol, or the drug may not be effective for their pain relief. In such cases, doctors may prescribe alternative medications that work similarly to tramadol. Some common synonyms for tramadol include Tapentadol, Oxycodone, Hydrocodone, and Morphine. These drugs work by binding to the opioid receptors in the brain, thereby blocking pain signals. However, it's important to note that each of these drugs has its own unique set of advantages and limitations and should only be taken under the guidance of a medical professional.