Allopurinol vs Aspirin

## Allopurinol vs Aspirin: Overview

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

## Mechanism of Action

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

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

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Aspirin — 2-3 hours.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Aspirin — C9H8O4.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Aspirin — 180.1580 g/mol.

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