Aspirin vs Cetirizine

## Aspirin vs Cetirizine: Overview

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

## Mechanism of Action

**Aspirin**: Irreversibly inhibits cyclooxygenase-1 and -2.

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

## Pharmacokinetics

**Half-life**: Aspirin — 2-3 hours; Cetirizine — 6.5-10 hours.

## Chemical Properties

**Molecular Formula**: Aspirin — C9H8O4; Cetirizine — C21H25ClN2O3.

**Molecular Weight**: Aspirin — 180.1580 g/mol; Cetirizine — 388.8900 g/mol.

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