Captopril vs Metronidazole

## Captopril vs Metronidazole: Overview

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

## Mechanism of Action

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

**Metronidazole**: Forms cytotoxic free radicals that damage bacterial DNA.

## Pharmacokinetics

**Half-life**: Captopril — 1.9 hours; Metronidazole — 8 hours.

## Chemical Properties

**Molecular Formula**: Captopril — C9H15NO3S; Metronidazole — C6H9N3O3.

**Molecular Weight**: Captopril — 217.2850 g/mol; Metronidazole — 171.1540 g/mol.

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