Fentanyl: Fentanyl (also known as Fentanil and by the brand names Sublimaze, Actiq, Durogesic, Duragesic, Fentora, Matrifen, Haldid, Onsolis, Instanyl, Abstral, Lazanda among others) is a potent opioid substance of the anilidopiperidine class. It is a strong agonist at the μ-opioid receptors and app
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