Fentanyl vs Morphine

## Fentanyl vs Morphine: Overview

This comparison examines the pharmacological differences between **Fentanyl** and **Morphine**.

## Mechanism of Action

**Fentanyl**: Highly potent synthetic mu-opioid receptor agonist approximately 100 times more potent than morphine.

**Morphine**: Mu-opioid receptor agonist.

## Pharmacokinetics

**Half-life**: Fentanyl — 2-4 hours; Morphine — 2-3 hours.

## Chemical Properties

**Molecular Formula**: Fentanyl — C22H28N2O; Morphine — C17H19NO3.

**Molecular Weight**: Fentanyl — 336.4700 g/mol; Morphine — 285.3380 g/mol.

**Type**: Fentanyl — Small molecule; Morphine — Small molecule.