Sublimaze is a brand name for the pain-relieving drug fentanyl. This medication belongs to the class of drugs called opioids, which work by binding to opioid receptors in the brain to reduce pain signals. While the term "Sublimaze" is a trademarked name used by the manufacturer, there are several synonyms for this medication that include fentanyl citrate, Duragesic, Actiq, and Fentora. These generic names refer to the same drug and have the same chemical components. Although these alternatives may be cheaper than Sublimaze, it is essential to consult a doctor before switching to any medication. The doctor can evaluate an individual's medical history, symptoms, and current health status to identify the most effective and safe option.