Gefitinib vs Upadacitinib

## Gefitinib vs Upadacitinib: Overview

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

## Mechanism of Action

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

**Upadacitinib**: Selective JAK1 inhibitor reducing signaling from cytokines implicated in autoimmune diseases.

## Pharmacokinetics

**Half-life**: Gefitinib — 48 hours; Upadacitinib — 9-14 hours.

## Chemical Properties

**Molecular Formula**: Gefitinib — C22H24ClFN4O3; Upadacitinib — C17H19F3N6O.

**Molecular Weight**: Gefitinib — 446.9000 g/mol; Upadacitinib — 380.3700 g/mol.

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