Ondansetron vs Venlafaxine

## Ondansetron vs Venlafaxine: Overview

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

## Mechanism of Action

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

**Venlafaxine**: Serotonin-norepinephrine reuptake inhibitor (SNRI).

## Pharmacokinetics

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

## Chemical Properties

**Molecular Formula**: Ondansetron — C18H19N3O; Venlafaxine — C17H27NO2.

**Molecular Weight**: Ondansetron — 293.3660 g/mol; Venlafaxine — 277.4020 g/mol.

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