alfentanil hydrochloride

A very potent, short-acting narcotic agonist analgesic used as an anesthetic or as an adjunct in the maintenance of general anesthesia.

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a narcotic analgesic drug used to relieve severe pain. It is administered by injection. Trade name: Rapifen.

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al·fen·ta·nil hy·dro·chlo·ride (al-fenґtə-nil) [USP] an opioid analgesic of rapid onset and short duration derived from fentanyl, used as a primary agent for the induction of general anesthesia, as an adjunct in the maintenance of general anesthesia, and as a supplement to regional or local anesthesia; administered intravenously.