Allopurinol vs Loratadine

## Allopurinol vs Loratadine: Overview

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

## Mechanism of Action

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

**Loratadine**: Second-generation H1 antihistamine with minimal CNS effects.

## Pharmacokinetics

**Half-life**: Allopurinol — 1-2 hours; Loratadine — 8 hours.

## Chemical Properties

**Molecular Formula**: Allopurinol — C5H4N4O; Loratadine — C22H23ClN2O2.

**Molecular Weight**: Allopurinol — 136.1120 g/mol; Loratadine — 382.8800 g/mol.

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