Allopurinol vs Tamoxifen

## Allopurinol vs Tamoxifen: Overview

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

## Mechanism of Action

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

**Tamoxifen**: Selective estrogen receptor modulator (SERM).

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Tamoxifen — 5-7 days.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Tamoxifen — C26H29NO.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Tamoxifen — 371.5150 g/mol.

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