Allopurinol vs Venlafaxine

## Allopurinol vs Venlafaxine: Overview

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

## Mechanism of Action

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

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

## Pharmacokinetics

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

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Venlafaxine — C17H27NO2.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Venlafaxine — 277.4020 g/mol.

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