Captopril vs Esomeprazole

## Captopril vs Esomeprazole: Overview

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

## Mechanism of Action

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

**Esomeprazole**: S-isomer of omeprazole; proton pump inhibitor irreversibly blocking gastric H+/K+-ATPase.

## Pharmacokinetics

**Half-life**: Captopril — 1.9 hours; Esomeprazole — 1-1.5 hours.

## Chemical Properties

**Molecular Formula**: Captopril — C9H15NO3S; Esomeprazole — C17H19N3O3S.

**Molecular Weight**: Captopril — 217.2850 g/mol; Esomeprazole — 345.4170 g/mol.

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