Cetirizine vs Diazepam

## Cetirizine vs Diazepam: Overview

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

## Mechanism of Action

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

**Diazepam**: Positive allosteric modulator of GABA-A receptors.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Diazepam — 20-100 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Diazepam — C16H13ClN2O.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Diazepam — 284.7400 g/mol.

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