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NCI Dictionary of Cancer Terms


fentanyl sublingual spray  listen  (FEN-tuh-nil sub-LING-wul …)

  A form of the drug fentanyl that is sprayed under the tongue and then absorbed into the blood. It is being studied in the treatment of breakthrough pain (pain that occurs even when pain-control medication is already being used) in cancer patients. Fentanyl is a type of opioid analgesic.