Allopurinol vs Valproic Acid

## Allopurinol vs Valproic Acid: Overview

This comparison examines the pharmacological differences between **Allopurinol** and **Valproic Acid**.

## Mechanism of Action

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

**Valproic Acid**: Enhances GABA transmission and blocks sodium/calcium channels.

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Valproic Acid — 9-16 hours.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Valproic Acid — C8H16O2.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Valproic Acid — 144.2110 g/mol.

**Type**: Allopurinol — Small molecule; Valproic Acid — Small molecule.