Allopurinol vs Metformin

## Allopurinol vs Metformin: Overview

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

## Mechanism of Action

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

**Metformin**: Activates AMP-activated protein kinase, decreasing hepatic glucose production.

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Metformin — 4-9 hours.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Metformin — C4H11N5.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Metformin — 129.1640 g/mol.

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