Afatinib vs Upadacitinib

## Afatinib vs Upadacitinib: Overview

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

## Mechanism of Action

**Afatinib**: Irreversible covalent inhibitor of ErbB family (EGFR/HER1, HER2, HER4) tyrosine kinases.

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

## Pharmacokinetics

**Half-life**: Afatinib — 37 hours; Upadacitinib — 9-14 hours.

## Chemical Properties

**Molecular Formula**: Afatinib — C24H25ClFN5O3; Upadacitinib — C17H19F3N6O.

**Molecular Weight**: Afatinib — 485.9400 g/mol; Upadacitinib — 380.3700 g/mol.

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