Cetirizine vs Zolpidem

## Cetirizine vs Zolpidem: Overview

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

## Mechanism of Action

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

**Zolpidem**: Selective GABA-A receptor alpha-1 subunit agonist.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Zolpidem — 2.5 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Zolpidem — C19H21N3O.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Zolpidem — 307.3950 g/mol.

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