Fentanyl vs Zolpidem

## Fentanyl vs Zolpidem: Overview

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

## Mechanism of Action

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

**Zolpidem**: Selective GABA-A receptor alpha-1 subunit agonist.

## Pharmacokinetics

**Half-life**: Fentanyl — 2-4 hours; Zolpidem — 2.5 hours.

## Chemical Properties

**Molecular Formula**: Fentanyl — C22H28N2O; Zolpidem — C19H21N3O.

**Molecular Weight**: Fentanyl — 336.4700 g/mol; Zolpidem — 307.3950 g/mol.

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