Atenolol vs Cetirizine

## Atenolol vs Cetirizine: Overview

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

## Mechanism of Action

**Atenolol**: Cardioselective beta-1 adrenergic receptor blocker without intrinsic sympathomimetic activity.

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

## Pharmacokinetics

**Half-life**: Atenolol — 6-7 hours; Cetirizine — 6.5-10 hours.

## Chemical Properties

**Molecular Formula**: Atenolol — C14H22N2O3; Cetirizine — C21H25ClN2O3.

**Molecular Weight**: Atenolol — 266.3360 g/mol; Cetirizine — 388.8900 g/mol.

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