Massachusetts

Fentanyl (also known as fentanil, brand names Sublimaze,[6] Actiq, Durogesic, Duragesic, Fentora, Matrifen, Haldid, Onsolis,[7] Instanyl,[8] Abstral,[9] Lazanda[10] and others[11]) is a potent, synthetic opioid analgesic with a rapid onset and short duration of action.[12] It is a strong agonist at the μ-opioid receptors. Historically, it has been used to treat breakthrough pain and is commonly used in pre-procedures as a pain reliever as well as an anesthetic in combination with a benzodiazepine.

Fentanyl is approximately 80 to 100 times more potent than morphine and roughly 40 to 50 times more potent than pharmaceutical grade (100% pure) heroin.[13][14]

https://en.wikipedia.org/wiki/Fentanyl