Aspirin vs Ondansetron

## Aspirin vs Ondansetron: Overview

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

## Mechanism of Action

**Aspirin**: Irreversibly inhibits cyclooxygenase-1 and -2.

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

## Pharmacokinetics

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

## Chemical Properties

**Molecular Formula**: Aspirin — C9H8O4; Ondansetron — C18H19N3O.

**Molecular Weight**: Aspirin — 180.1580 g/mol; Ondansetron — 293.3660 g/mol.

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