Fentanyl vs Metformin

## Fentanyl vs Metformin: Overview

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

## Mechanism of Action

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

**Metformin**: Activates AMP-activated protein kinase, decreasing hepatic glucose production.

## Pharmacokinetics

**Half-life**: Fentanyl — 2-4 hours; Metformin — 4-9 hours.

## Chemical Properties

**Molecular Formula**: Fentanyl — C22H28N2O; Metformin — C4H11N5.

**Molecular Weight**: Fentanyl — 336.4700 g/mol; Metformin — 129.1640 g/mol.

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