Allopurinol vs Doxycycline

## Allopurinol vs Doxycycline: Overview

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

## Mechanism of Action

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

**Doxycycline**: Inhibits bacterial protein synthesis by binding 30S ribosomal subunit.

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Doxycycline — 18-22 hours.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Doxycycline — C22H24N2O8.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Doxycycline — 444.4350 g/mol.

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