Cetirizine vs Venlafaxine

## Cetirizine vs Venlafaxine: Overview

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

## Mechanism of Action

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

**Venlafaxine**: Serotonin-norepinephrine reuptake inhibitor (SNRI).

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Venlafaxine — 5 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Venlafaxine — C17H27NO2.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Venlafaxine — 277.4020 g/mol.

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