Gefitinib vs Trastuzumab

## Gefitinib vs Trastuzumab: Overview

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

## Mechanism of Action

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

**Trastuzumab**: Anti-HER2 monoclonal antibody inhibiting receptor signaling.

## Pharmacokinetics

**Half-life**: Gefitinib — 48 hours; Trastuzumab — 28 days.

## Chemical Properties

**Molecular Formula**: Gefitinib — C22H24ClFN4O3; Trastuzumab — N/A.

**Molecular Weight**: Gefitinib — 446.9000 g/mol; Trastuzumab — N/A.

**Type**: Gefitinib — Small molecule; Trastuzumab — Antibody.