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.