Allopurinol vs Codeine
## Allopurinol vs Codeine: Overview
This comparison examines the pharmacological differences between **Allopurinol** and **Codeine**.
## Mechanism of Action
**Allopurinol**: Xanthine oxidase inhibitor reducing uric acid production.
## Pharmacokinetics
**Half-life**: Allopurinol — 1-2 hours; Codeine — N/A.
## Chemical Properties
**Molecular Formula**: Allopurinol — C5H4N4O; Codeine — N/A.
**Molecular Weight**: Allopurinol — 136.1120 g/mol; Codeine — N/A.
**Type**: Allopurinol — Small molecule; Codeine — Small molecule.