Afatinib vs Metronidazole

## Afatinib vs Metronidazole: Overview

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

## Mechanism of Action

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

**Metronidazole**: Forms cytotoxic free radicals that damage bacterial DNA.

## Pharmacokinetics

**Half-life**: Afatinib — 37 hours; Metronidazole — 8 hours.

## Chemical Properties

**Molecular Formula**: Afatinib — C24H25ClFN5O3; Metronidazole — C6H9N3O3.

**Molecular Weight**: Afatinib — 485.9400 g/mol; Metronidazole — 171.1540 g/mol.

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