Aspirin vs Methotrexate

## Aspirin vs Methotrexate: Overview

This comparison examines the pharmacological differences between **Aspirin** and **Methotrexate**.

## Mechanism of Action

**Aspirin**: Irreversibly inhibits cyclooxygenase-1 and -2.

**Methotrexate**: Dihydrofolate reductase inhibitor.

## Pharmacokinetics

**Half-life**: Aspirin — 2-3 hours; Methotrexate — 3-10 hours.

## Chemical Properties

**Molecular Formula**: Aspirin — C9H8O4; Methotrexate — C20H22N8O5.

**Molecular Weight**: Aspirin — 180.1580 g/mol; Methotrexate — 454.4400 g/mol.

**Type**: Aspirin — Small molecule; Methotrexate — Small molecule.