Citalopram vs Ranitidine

## Citalopram vs Ranitidine: Overview

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

## Mechanism of Action

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

**Ranitidine**: Competitive H2 receptor antagonist.

## Pharmacokinetics

**Half-life**: Citalopram — 35 hours; Ranitidine — 2-3 hours.

## Chemical Properties

**Molecular Formula**: Citalopram — C20H21FN2O; Ranitidine — C13H22N4O3S.

**Molecular Weight**: Citalopram — 324.3920 g/mol; Ranitidine — 314.4050 g/mol.

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