Citalopram vs Fentanyl

## Citalopram vs Fentanyl: Overview

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

## Mechanism of Action

**Citalopram**: Selective serotonin reuptake inhibitor (SSRI); racemic mixture with escitalopram as active S-enantiomer.

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

## Pharmacokinetics

**Half-life**: Citalopram — 35 hours; Fentanyl — 2-4 hours.

## Chemical Properties

**Molecular Formula**: Citalopram — C20H21FN2O; Fentanyl — C22H28N2O.

**Molecular Weight**: Citalopram — 324.3920 g/mol; Fentanyl — 336.4700 g/mol.

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