Aspirin vs Gefitinib

## Aspirin vs Gefitinib: Overview

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

## Mechanism of Action

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

**Gefitinib**: Selective reversible inhibitor of EGFR tyrosine kinase.

## Pharmacokinetics

**Half-life**: Aspirin — 2-3 hours; Gefitinib — 48 hours.

## Chemical Properties

**Molecular Formula**: Aspirin — C9H8O4; Gefitinib — C22H24ClFN4O3.

**Molecular Weight**: Aspirin — 180.1580 g/mol; Gefitinib — 446.9000 g/mol.

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