Cetirizine vs Escitalopram

## Cetirizine vs Escitalopram: Overview

This comparison examines the pharmacological differences between **Cetirizine** and **Escitalopram**.

## Mechanism of Action

**Cetirizine**: Second-generation H1 antihistamine.

**Escitalopram**: S-enantiomer of citalopram; selective serotonin reuptake inhibitor.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Escitalopram — 27-32 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Escitalopram — C20H21FN2O.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Escitalopram — 324.3920 g/mol.

**Type**: Cetirizine — Small molecule; Escitalopram — Small molecule.