Gefitinib vs Pembrolizumab

## Gefitinib vs Pembrolizumab: Overview

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

## Mechanism of Action

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

**Pembrolizumab**: Anti-PD-1 monoclonal antibody restoring anti-tumor immunity.

## Pharmacokinetics

**Half-life**: Gefitinib — 48 hours; Pembrolizumab — 26 days.

## Chemical Properties

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

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

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