Cetirizine vs Quetiapine

## Cetirizine vs Quetiapine: Overview

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

## Mechanism of Action

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

**Quetiapine**: Atypical antipsychotic; antagonist at multiple receptors.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Quetiapine — 6 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Quetiapine — C21H25N3O2S.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Quetiapine — 383.5100 g/mol.

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