Captopril vs Cetirizine

## Captopril vs Cetirizine: Overview

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

## Mechanism of Action

**Captopril**: First orally active ACE inhibitor; contains thiol group that binds zinc at ACE active site.

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

## Pharmacokinetics

**Half-life**: Captopril — 1.9 hours; Cetirizine — 6.5-10 hours.

## Chemical Properties

**Molecular Formula**: Captopril — C9H15NO3S; Cetirizine — C21H25ClN2O3.

**Molecular Weight**: Captopril — 217.2850 g/mol; Cetirizine — 388.8900 g/mol.

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