Allopurinol vs Upadacitinib

## Allopurinol vs Upadacitinib: Overview

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

## Mechanism of Action

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

**Upadacitinib**: Selective JAK1 inhibitor reducing signaling from cytokines implicated in autoimmune diseases.

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Upadacitinib — 9-14 hours.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Upadacitinib — C17H19F3N6O.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Upadacitinib — 380.3700 g/mol.

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