Allopurinol vs Citalopram

## Allopurinol vs Citalopram: Overview

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

## Mechanism of Action

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

**Citalopram**: Selective serotonin reuptake inhibitor (SSRI); racemic mixture with escitalopram as active S-enantiomer.

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Citalopram — 35 hours.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Citalopram — C20H21FN2O.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Citalopram — 324.3920 g/mol.

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