Cetirizine vs Metoprolol

## Cetirizine vs Metoprolol: Overview

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

## Mechanism of Action

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

**Metoprolol**: Selective beta-1 adrenergic receptor blocker.

## Pharmacokinetics

**Half-life**: Cetirizine — 6.5-10 hours; Metoprolol — 3-7 hours.

## Chemical Properties

**Molecular Formula**: Cetirizine — C21H25ClN2O3; Metoprolol — C15H25NO3.

**Molecular Weight**: Cetirizine — 388.8900 g/mol; Metoprolol — 267.3640 g/mol.

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