Captopril vs Ranitidine

## Captopril vs Ranitidine: Overview

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

## Mechanism of Action

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

**Ranitidine**: Competitive H2 receptor antagonist.

## Pharmacokinetics

**Half-life**: Captopril — 1.9 hours; Ranitidine — 2-3 hours.

## Chemical Properties

**Molecular Formula**: Captopril — C9H15NO3S; Ranitidine — C13H22N4O3S.

**Molecular Weight**: Captopril — 217.2850 g/mol; Ranitidine — 314.4050 g/mol.

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