Cetirizine vs Omeprazole

## Cetirizine vs Omeprazole: Overview

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

## Mechanism of Action

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

**Omeprazole**: Proton pump inhibitor that irreversibly blocks H+/K+-ATPase.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Omeprazole — 0.5-1 hour.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Omeprazole — C17H19N3O3S.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Omeprazole — 345.4170 g/mol.

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