Allopurinol vs Ondansetron

## Allopurinol vs Ondansetron: Overview

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

## Mechanism of Action

**Allopurinol**: Xanthine oxidase inhibitor reducing uric acid production.

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

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Ondansetron — 3-5 hours.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Ondansetron — C18H19N3O.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Ondansetron — 293.3660 g/mol.

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