Fentanyl vs Paroxetine

## Fentanyl vs Paroxetine: Overview

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

## Mechanism of Action

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

**Paroxetine**: Potent selective serotonin reuptake inhibitor with additional muscarinic and NE reuptake inhibition.

## Pharmacokinetics

**Half-life**: Fentanyl — 2-4 hours; Paroxetine — 21 hours.

## Chemical Properties

**Molecular Formula**: Fentanyl — C22H28N2O; Paroxetine — C19H20FNO3.

**Molecular Weight**: Fentanyl — 336.4700 g/mol; Paroxetine — 329.3730 g/mol.

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