Captopril vs Ondansetron

## Captopril vs Ondansetron: Overview

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

## Mechanism of Action

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

**Ondansetron**: Selective 5-HT3 receptor antagonist.

## Pharmacokinetics

**Half-life**: Captopril — 1.9 hours; Ondansetron — 3-5 hours.

## Chemical Properties

**Molecular Formula**: Captopril — C9H15NO3S; Ondansetron — C18H19N3O.

**Molecular Weight**: Captopril — 217.2850 g/mol; Ondansetron — 293.3660 g/mol.

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