This opioid is synthetic, has immediate onset and lasts 30 minutes; can be given as a lollipop and does not release histamine.

This opioid is synthetic, has immediate onset and lasts 30 minutes; can be given as a lollipop and does not release histamine.

• A. Fentanyl
• B. Morphine sulfate
• C. Meperidine
• D. Hydromorphone

Answer: (A)

Fentanyl fits this profile because it is a synthetic opioid that is highly lipophilic, allowing rapid absorption through the oral mucosa. When delivered as an oral transmucosal lozenge, it provides quick onset of pain relief within minutes and a short duration around 30 minutes, which is ideal for breakthrough pain in opioid-tolerant patients. It also tends to cause little histamine release, reducing itch and hypotension compared with morphine. The other opioids don’t match this combination: morphine commonly causes histamine-mediated itching and vasodilation and isn’t given as a lozenge for quick, short-duration mucosal relief; meperidine has less favorable pharmacokinetics and toxic metabolites and isn’t used as a lozenge; hydromorphone, while potent, can still involve histamine effects and isn’t formulated as an oral transmucosal lozenge.

Fentanyl fits this profile because it is a synthetic opioid that is highly lipophilic, allowing rapid absorption through the oral mucosa. When delivered as an oral transmucosal lozenge, it provides quick onset of pain relief within minutes and a short duration around 30 minutes, which is ideal for breakthrough pain in opioid-tolerant patients. It also tends to cause little histamine release, reducing itch and hypotension compared with morphine.

The other opioids don’t match this combination: morphine commonly causes histamine-mediated itching and vasodilation and isn’t given as a lozenge for quick, short-duration mucosal relief; meperidine has less favorable pharmacokinetics and toxic metabolites and isn’t used as a lozenge; hydromorphone, while potent, can still involve histamine effects and isn’t formulated as an oral transmucosal lozenge.