Captopril vs Rabeprazole

## Captopril vs Rabeprazole: Overview

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

## Mechanism of Action

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

**Rabeprazole**: Proton pump inhibitor irreversibly inhibiting gastric H+/K+-ATPase with faster onset than omeprazole.

## Pharmacokinetics

**Half-life**: Captopril — 1.9 hours; Rabeprazole — 1-2 hours.

## Chemical Properties

**Molecular Formula**: Captopril — C9H15NO3S; Rabeprazole — C18H21N3O3S.

**Molecular Weight**: Captopril — 217.2850 g/mol; Rabeprazole — 359.4440 g/mol.

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