Ondansetron vs Topiramate

## Ondansetron vs Topiramate: Overview

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

## Mechanism of Action

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

**Topiramate**: Multiple mechanisms: Na+ channel block, GABA enhancement, glutamate inhibition.

## Pharmacokinetics

**Half-life**: Ondansetron — 3-5 hours; Topiramate — 21 hours.

## Chemical Properties

**Molecular Formula**: Ondansetron — C18H19N3O; Topiramate — C12H21NO8S.

**Molecular Weight**: Ondansetron — 293.3660 g/mol; Topiramate — 339.3630 g/mol.

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