Afatinib vs Metoprolol

## Afatinib vs Metoprolol: Overview

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

## Mechanism of Action

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

**Metoprolol**: Selective beta-1 adrenergic receptor blocker.

## Pharmacokinetics

**Half-life**: Afatinib — 37 hours; Metoprolol — 3-7 hours.

## Chemical Properties

**Molecular Formula**: Afatinib — C24H25ClFN5O3; Metoprolol — C15H25NO3.

**Molecular Weight**: Afatinib — 485.9400 g/mol; Metoprolol — 267.3640 g/mol.

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